LaPO4 coating on alumina-based fiber: Strength retention of fiber and improvement of interfacial performances

ABSTRACTThe tensile strengths of Nextel™ 720 fibers as well as tows and minicomposites made of these fibers were measured to study the effects of monazite coating at room temperature (RT) and 1200°C (HT). Tests were conducted on as-received materials (called unsoaked) as well as materials that had been thermally soaked at HT for 100 hours. Weibull analysis of fiber strength data shows close agreement between the Weibull modulus obtained from the statistical fracture distribution and the modulus obtained from a study of the gage length dependence of strength. The monazite coating does not change the RT strength of unsoaked single fibers, but has a beneficial effect in terms of strength retention under HT testing. This beneficial effect of the coating disappears for soaked samples. The results for tows and minicomposites also indicate that for the unsoaked condition, tensile failure appears to be driven by fiber surface flaws and the presence of the monazite coatings clearly improves both RT and HT strength of fibers, tows and minicomposites. However, the beneficial effects of the coating disappear after long term exposure to HT.

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Effect of Air Oxidation Treatment on Interficial Properties of Carbon Fibers

Materials Science Forum ◽

10.4028/www.scientific.net/msf.993.695 ◽

2020 ◽

Vol 993 ◽

pp. 695-700

Author(s):

Shi Hui Wang ◽

Li Li Yao ◽

Jun Hong Jin ◽

Guang Li ◽

Sheng Lin Yang

Keyword(s):

Carbon Fiber ◽

Low Temperature ◽

Functional Groups ◽

Carbon Fibers ◽

Fiber Strength ◽

Air Oxidation ◽

Oxidation Treatment ◽

Adhesion Properties ◽

Thermoplastic Matrix ◽

Strength Retention

In this work, low temperature air oxidation treatment for carbon fiber sized by epoxy was performed and the surficial chemical changing, the sizing and fiber strength retention, as well as the adhesion properties between CFs and Nylon resin were characterized. The surficial modification effects from the air oxidation were also compared with other treatment such as electrochemical processing. It has been found the carbon fiber could obtained more polarized functional groups in the surface to promise better compatibility with thermoplastic matrix, and maintain enough sizing protection and fiber strength

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NIROSTA 4568

Alloy Digest ◽

10.31399/asm.ad.ss0949 ◽

2005 ◽

Vol 54 (12) ◽

Keyword(s):

Corrosion Resistance ◽

Physical Properties ◽

Tensile Properties ◽

Mechanical Loading ◽

Heat Treating ◽

Strained Condition ◽

Strength Retention

Abstract Nirosta 4568 is a higher-carbon alloy used primarily in high mechanical loading applications for strength retention. It is often supplied in the strained condition and used as springs. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-949. Producer or source: ThyssenKrupp Nirosta GmbH.

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Investigation of cotton mega-environment based on fiber strength selection and GGE biplot

CHINESE JOURNAL OF ECO-AGRICULTURE ◽

10.3724/sp.j.1011.2012.01500 ◽

2013 ◽

Vol 20 (11) ◽

pp. 1500-1507

Author(s):

Nai-Yin XU ◽

Guo-Wei ZHANG ◽

Jian LI ◽

Zhi-Guo ZHOU

Keyword(s):

Fiber Strength ◽

Gge Biplot

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Some Genetic Implications in the Transfer of High Fiber Strength Genes to Upland Cotton 1

Crop Science ◽

10.2135/cropsci1979.0011183x001900040013x ◽

1979 ◽

Vol 19 (4) ◽

pp. 481-484 ◽

Cited By ~ 47

Author(s):

T. W. Culp ◽

D. C. Harrell ◽

T. Kerr

Keyword(s):

Upland Cotton ◽

Fiber Strength ◽

High Fiber

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Multidirectional Selection for Fiber Strength in Upland Cotton 1

Crop Science ◽

10.2135/cropsci1986.0011183x002600040024x ◽

1986 ◽

Vol 26 (4) ◽

pp. 744-750 ◽

Cited By ~ 6

Author(s):

Lloyd L. McCall ◽

Laval M. Verhalea ◽

Ronald W. McNew

Keyword(s):

Upland Cotton ◽

Fiber Strength ◽

Selection For

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Registration of Arkot A129 and Arkot A132 Germplasm Lines of Cotton with High Fiber Strength

Crop Science ◽

10.2135/cropsci1998.0011183x003800020094x ◽

1998 ◽

Vol 38 (2) ◽

pp. 567-568

Author(s):

F. M. Bourland ◽

R. E. McGowen ◽

C. Wayne Smith

Keyword(s):

Fiber Strength ◽

High Fiber

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Effect of preset interfacial ZrB2 particles on the microstructure and properties of C/C-AlSi composites

Journal of Composite Materials ◽

10.1177/00219983211004693 ◽

2021 ◽

pp. 002199832110046

Author(s):

Wei Feng ◽

Chengwei Tang ◽

Lei Liu ◽

Jian Chen ◽

Yang Zhang ◽

...

Keyword(s):

Compressive Strength ◽

Thermal Expansion ◽

Thermal Shock ◽

Retention Rate ◽

Pressure Infiltration ◽

Micro Scale ◽

Before And After ◽

Micro Morphology ◽

Strength Retention ◽

Fiber Fabric

ZrB2 particles were preset to the C-AlSi interface to improve oxidation resistance of C/C preform and adjust the microstructure of the interpenetrated C/C-AlSi composite prepared through pressure infiltration of eutectic AlSi into a fiber fabric based porous C/C skeleton. Micro-morphology investigations suggested that the AlSi textures were changed from dendritic to petals-like state, and the nano to micro-scale ZrB2 particles were dispersed into AlSi and affected the distribution of Al and Si nearby carbon. Tests demonstrated that C/C-AlSi have slight lower density and thermal expansion coefficient, and higher original compressive strength, while C/C-ZrB2-AlSi composites presented an outstanding strength retention rate after thermal shock. Fracture and micro-morphology indicated that the influence of the preset ZrB2 to the interface of carbon and alloy greatly affected the generation and propagation of cracks, which determined the diverse compression behaviors of the composites before and after thermal shock.

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