PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Biomimetic teakwood structured environmental barrier coating

Biomimetic teakwood structured environmental barrier coating
2025-01-08
(Press-News.org)

The core message of the article is that researchers have developed an innovative technology in plasma spraying-physical vapor deposition known as alternating vapor/liquid phase deposition. By adjusting the arc current, researchers can finely control the evaporation and deposition of SiO2, and through a heat treatment process, achieve in-situ reactions that optimize the composition, structure, and nanoscale dimensions of the coating, creating an orderly arranged multi-layered teak-like biomimetic structure within it. They have conducted an in-depth analysis of the complex deposition mechanisms involved in this process. This new teak-like biomimetic structure coating is expected to significantly enhance its mechanical properties and corrosion resistance, providing an innovative coating protection strategy for high-temperature applications in the field of gas turbine engines.

The team published their work in Journal of Advanced Ceramics on December 19, 2024

“Biomimetic research on environmental barrier coatings is relatively rare, primarily because there are significant challenges in precisely controlling the composition and structure of the coatings during the high-temperature spraying process. We have chosen teak, known for its excellent mechanical properties and environmental durability, as the biomimetic subject. By employing the vapor-liquid phase interval deposition method and regulating parameters during the spraying process, such as arc current, we have achieved the evaporation and deposition of SiO2, thereby constructing a regularly arranged multi-layer structure within the coating. This unique deposition mechanism allows us to mimic the natural layered structure of teak, which is crucial for enhancing the mechanical properties and corrosion resistance of the coating.”said Dr. Guifang Han,the corresponding author of the paper, a professor in the School of Materials Science and Engineering at Shandong University.

“From a thermodynamic perspective, we have conducted an in-depth analysis of the deposition mechanism of volatilized SiO2 gas during the spraying process. We have ingeniously applied heat treatment technology to facilitate an in-situ reaction between the gas-phase deposited SiO2 and Yb2SiO5, which is produced from the decomposition of Yb2Si2O7 powder, to re-form Yb2Si2O7. This approach allows us to simultaneously regulate the composition, structure, and nanoscale dimensions of the coating, successfully achieving a functional structure that biomimics teak wood.”said Dr. Guifang Han

Despite the progress made, there is still much to explore in the field of biomimetic teak structure environmental barrier coatings. In this regard, Han also emphasized that the key to future research will be the systematic evaluation of the corrosion resistance and mechanical properties of these coatings, and comparing them with the findings in existing literature to verify their effectiveness in practical applications. The ultimate vision of the research is to commercialize these coating technologies, thereby enhancing the protection efficiency of high-temperature applications such as gas turbine engines.

Other contributors include Jungui Zhang, Xinxin Cao, Jingde Zhang from the School of Materials Science and Engineering at Shandong University in Jinan, China; Xiaofeng Zhang, Min Liu, Kesong Zhou from the Institute of New Materials at Guangdong Academy of Sciences in Guangzhou, China.

This work was supported by the National Natural Science Foundation of China (52322104, 52172067, 92160202), Natural Science Foundation of Guangdong Province (2021B1515020038), Guangdong Special Support Program (2019BT02C629), Guangdong Provincial Science and Technology Program (2023A0505010017), Science Center for Gas Turbine Project (P2023-C-IV-002-001).

 

About Author

Guifang Han, currently a professor and doctoral supervisor at the School of Materials Science and Engineering, Shandong University. She mainly engages in the design, preparation, and performance evaluation of ultra-high temperature ceramic materials and coatings for extreme environments, additive manufacturing of ceramic materials, and research on structure-function integrated materials. She has published over 90 SCI papers in journals such as Progress in Materials Science, Nature Communications, Journal of Advanced Ceramics, and Corrosion Science, and has been cited more than 2000 times; she has co-authored 2 academic monographs; presided over 7 scientific research projects including the National Natural Science Foundation of China; and serves as a member of the High-Temperature Branch of the Chinese Society for Corrosion, and a member of the Ceramic Matrix Composites Branch of the Chinese Composite Materials Society.

About Journal of Advanced Ceramics

Journal of Advanced Ceramics (JAC) is an international academic journal that presents the state-of-the-art results of theoretical and experimental studies on the processing, structure, and properties of advanced ceramics and ceramic-based composites. JAC is Fully Open Access, monthly published by Tsinghua University Press, and exclusively available via SciOpen. JAC’s 2023 IF is 18.6, ranking in Top 1 (1/31, Q1) among all journals in “Materials Science, Ceramics” category, and its 2023 CiteScore is 21.0 (top 5%) in Scopus database. ResearchGate homepage: https://www.researchgate.net/journal/Journal-of-Advanced-Ceramics-2227-8508

About SciOpen 

SciOpen is an open access resource of scientific and technical content published by Tsinghua University Press and its publishing partners. SciOpen provides end-to-end services across manuscript submission, peer review, content hosting, analytics, identity management, and expert advice to ensure each journal’s development. By digitalizing the publishing process, SciOpen widens the reach, deepens the impact, and accelerates the exchange of ideas.

END


[Attachments] See images for this press release:
Biomimetic teakwood structured environmental barrier coating

ELSE PRESS RELEASES FROM THIS DATE:

Low-cost system will improve communications among industrial machines

Low-cost system will improve communications among industrial machines
2025-01-08
Researchers have found a low-power, inexpensive way for large numbers of devices, such as machines in factories and equipment in labs, to share information by efficiently using signals at untapped high frequencies. The technology could immediately enable low-cost, efficient real-time monitoring in industrial settings, such as tracking the condition of manufacturing robots or detecting gas leaks in refineries, by eliminating the need for power-hungry signal transmitters. The researchers said that with some engineering improvements, the technology ...

Elderberry juice shows benefits for weight management, metabolic health

2025-01-08
SPOKANE, Wash.—Elderberry juice may be a potent tool for weight management and enhancing metabolic health, according to a recent Washington State University-led study. A clinical trial published in the journal Nutrients found that drinking 12 ounces of elderberry juice daily for a week causes positive changes in the gut microbiome and improves glucose tolerance and fat oxidation. Elderberry, a small dark purple berry found on elder trees native to Europe, is commonly used as a medicinal plant and supplement to promote immune function. Its other potential health benefits are poorly understood, however. “Elderberry ...

A new era in genetic engineering

A new era in genetic engineering
2025-01-08
Influential inventions often combine existing tools in new ways. The iPhone, for instance, amalgamated the telephone, web browser and camera, among many other devices. The same is now possible in gene editing. Rather than employ separate tools for editing genes and regulating their expression, these distinct goals can now be combined into a single tool that can simultaneously and independently address different genetic diseases in the same cell. Merging Gene Editing and Regulation In a new paper in Nature ...

Study identifies coastal black pine trees resistant to tsunamis and strong winds

Study identifies coastal black pine trees resistant to tsunamis and strong winds
2025-01-08
Researchers in Japan have found that the taller the Japanese black pine trees (Pinus thunbergii) along the coast, the deeper their roots go into the ground. Trees with deeper roots are more resistant to damage from tsunamis and strong winds. Their findings suggest that the resilience of coastal P. thunbergii trees may be improved by inducing deep root growth, specifically in short trees. The study was published in the Journal of Forest Research. Many P. thunbergii trees have been planted in coastal forests in Japan because they are salt-tolerant and can grow in sandy soils lacking nutrients. P. thunbergii ...

From gender dysphoria to special skills: decoding the link

From gender dysphoria to special skills: decoding the link
2025-01-08
Why have males been overrepresented among geniuses in STEM fields so far? A popular biological psychological explanation is the Extreme Male Brain Theory (EMB), which suggests that an overdose of prenatal androgen (male hormone) leads to the hyper-masculine brain type, characterized by a strong geek tendency and insensitivity to others' feelings. This theory explains the etiology of autism spectrum disorder (ASD) and inevitably connects prenatal androgen action with talents in specific fields. However, the current research shows evidence that the opposite story might be true: reduced androgen exposure in ...

Study advances possible blood test for early-stage Alzheimer’s disease

2025-01-08
Declining blood levels of two molecules that occur naturally in the body track closely with worsening Alzheimer’s disease, particularly in women. Levels were found to drop gradually, from women with no signs of memory, disorientation, and slowed thinking to those with early signs of mild cognitive impairment. Decreases were more prominent in women with moderate or severe stages of the disease. Declines in men were evident in only one molecule, revealing a disease-specific difference between the sexes. Six million Americans, most over the age of 65 and predominantly women, are currently ...

New international research collaboration to develop and test an improved dietary supplement for pregnant women

New international research collaboration to develop and test an improved dietary supplement for pregnant women
2025-01-08
New international research collaboration to develop and test an improved dietary supplement for pregnant women Poor nutrition during pregnancy can have serious consequences for both maternal and child health. A new research collaboration – ‘Mother’s Micronutrient Supplement for Pregnancy and Lactation’ (MoMS) – between researchers in Kenya, Norway and Denmark aims to develop and test a new, improved dietary supplement to reduce incidences of low birth weight, improve maternal and child health, and enhance growth and cognitive development in children. MoMS ...

Presenting a path forward for future genetically-modified pig heart transplants: lessons learned from second patient

Presenting a path forward for future genetically-modified pig heart transplants: lessons learned from second patient
2025-01-08
Continuing significant advancements in the field of xenotransplantation, surgeon-scientists from the University of Maryland School of Medicine provided an extensive analysis on the second patient in the world to receive a genetically-modified pig organ. Lawrence Faucette, 58, received a pig heart at the University of Maryland Medical Center in 2023 to treat his end-stage heart failure. He lived for 40 days before choosing to forgo additional treatment after the transplant began to fail due to rejection. The report documenting insights ...

When the past meets the future: Innovative drone mapping unlocks secrets of Bronze Age ‘mega fortress’ in the Caucasus

When the past meets the future: Innovative drone mapping unlocks secrets of Bronze Age ‘mega fortress’ in the Caucasus
2025-01-08
A Cranfield University, UK, academic has used drone mapping to investigate a 3000-year-old ‘mega fortress’ in the Caucasus mountains. Dr Nathaniel Erb-Satullo, Senior Lecturer in Architectural Science at Cranfield Forensic Institute, has been researching the site since 2018 with Dimitri Jachvliani, his co-director from the Georgian National Museum, revealing details that re-shape our understanding of the site and contribute to a global reassessment of ancient settlement growth and urbanism. Fortress settlements in the South Caucasus appeared between 1500-500 BCE, and represent an ...

AI could improve the success of IVF treatment

2025-01-08
During IVF treatment, doctors use ultrasound scans to monitor the size of follicles - small sacs in the ovaries containing eggs - to decide when to give a hormone injection known as the ‘trigger’ to prepare the eggs for collection and ensure that they are ready to be fertilised with sperm to create embryos. The timing of the trigger is a key decision, as it works less effectively if the follicles are too small or too large at the time of administration. After the eggs are collected and fertilised by sperm, an embryo is then selected and implanted into the womb to hopefully lead to pregnancy. Researchers used ‘Explainable ...

LAST 30 PRESS RELEASES:

Exercise as an anti-ageing intervention to avoid detrimental impact of mental fatigue

UMass Amherst Nursing Professor Emerita honored as ‘Living Legend’

New guidelines aim to improve cystic fibrosis screening

Picky eaters by day, buffet by night: Butterfly, moth diets sync to plant aromas

Pennington Biomedical’s Dr. Leanne Redman honored with the E. V. McCollum Award from the American Society for Nutrition

CCNY physicists uncover electronic interactions mediated via spin waves

Researchers’ 3D-printing formula may transform future of foam

Nurture more important than nature for robotic hand

Drug-delivering aptamers target leukemia stem cells for one-two knockout punch

New study finds that over 95% of sponsored influencer posts on Twitter were not disclosed

New sea grant report helps great lakes fish farmers navigate aquaculture regulations

Strain “trick” improves perovskite solar cells’ efficiency

How GPS helps older drivers stay on the roads

Estrogen and progesterone stimulate the body to make opioids

Dancing with the cells – how acoustically levitating a diamond led to a breakthrough in biotech automation

Machine learning helps construct an evolutionary timeline of bacteria

Cellular regulator of mRNA vaccine revealed... offering new therapeutic options

Animal behavioral diversity at risk in the face of declining biodiversity

Finding their way: GPS ignites independence in older adult drivers

Antibiotic resistance among key bacterial species plateaus over time

‘Some insects are declining but what’s happening to the other 99%?’

Powerful new software platform could reshape biomedical research by making data analysis more accessible

Revealing capillaries and cells in living organs with ultrasound

American College of Physicians awards $260,000 in grants to address equity challenges in obesity care

Researchers from MARE ULisboa discover that the European catfish, an invasive species in Portugal, has a prolonged breeding season, enhancing its invasive potential

Rakesh K. Jain, PhD, FAACR, honored with the 2025 AACR Award for Lifetime Achievement in Cancer Research

Solar cells made of moon dust could power future space exploration

Deporting immigrants may further shrink the health care workforce

Border region emergency medical services in migrant emergency care

Resident physician intentions regarding unionization

[Press-News.org] Biomimetic teakwood structured environmental barrier coating