scholarly journals Development of low-expansion ceramics with strength retention to elevated temperatures. Final report

10.2172/28336 ◽  
1994 ◽  
Author(s):  
D.A. Hirschfeld ◽  
J.J. Jr. Brown
Keyword(s):  
Elevated Temperatures ◽  
Final Report ◽  
Strength Retention

scholarly journals SCALING OF ZIRCONIUM AT ELEVATED TEMPERATURES. Final Report

1959 ◽  
Author(s):  
H Probst ◽  
E Evans ◽  
W Baldwin, Jr
Keyword(s):  
Elevated Temperatures ◽  
Final Report

Microstructure of Silicon Nitride Fibers at Elevated Temperatures

2017 ◽  
Vol 898 ◽  
pp. 1705-1711 ◽  
Author(s):  
Jun Zhe Li ◽  
Xun Sun ◽  
Hai Tao Liu ◽  
Hai Feng Cheng ◽  
Xiao Shan Zhang
Keyword(s):  
Heat Treatment ◽  
Silicon Nitride ◽  
Amorphous Silicon ◽  
Treatment Process ◽  
Elevated Temperatures ◽  
Heat Treatment Process ◽  
Amorphous Silicon Nitride ◽  
Heat Treated ◽  
Strength Retention ◽  
Heat Treated Temperature

The composition and microstructure of silicon nitride fibers after heat-treatment at elevated temperatures were investigated by XRD, NMR, XPS, SEM and TEM analyses. The results show that as-received fibers consisted of amorphous silicon nitride, and a little Si-C-O structure. During heat-treatment process, α-Si3N4 and β-Si3N4 formed resulting from the crystallization of amorphous silicon nitride, and the formation of β-SiC derived from the decomposition of Si-C-O structure. As heat-treated temperature increased from 1400oC to 1600oC, the above phenomenon become obvious, indicating that the fiber would possess high serving life with serving temperature lower than 1400oC. The tensile strength of fibers stays stable when heat-treated temperature was below 1200oC, while the strength retention of fibers sharply decreased to 50% after heat-treatment at 1400°C.

ATI 720

Alloy Digest ◽  
2009 ◽  
Vol 58 (6) ◽  
Keyword(s):  
Solid Solution ◽  
Corrosion Resistance ◽  
Elevated Temperatures ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Nickel Base Alloy ◽  
Temperature Performance ◽  
Nickel Base ◽  
Strength Retention

Abstract ATI 720 is a nickel-base alloy, solid solution strengthened with tungsten and molybdenum and precipitation hardened with titanium and aluminum. The alloy combines high strength with metallurgical stability as demonstrated by excellent impact strength retention after long exposures at elevated temperatures. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-669. Producer or source: Allvac, An Allegheny Technologies Company.

Dual-phase magnesia-zirconia ceramics with strength retention at elevated temperatures

1989 ◽  
Vol 24 (11) ◽  
pp. 3855-3864 ◽  
Author(s):  
Thomas C. Yuan ◽  
G. V. Srinivasan ◽  
Jan Fong Jue ◽  
Anil V. Virkar
Keyword(s):  
Elevated Temperatures ◽  
Dual Phase ◽  
Zirconia Ceramics ◽  
Strength Retention
Sign in / Sign up

Export Citation Format

Share Document