Tensile Strength of Boron Filament coated with Silicon Carbide and of Uncoated Boron Filament at Elevated Temperatures

Nature ◽  
1968 ◽  
Vol 220 (5169) ◽  
pp. 781-782 ◽  
Author(s):  
R. VELTRI ◽  
F. GALASSO
Keyword(s):  
Silicon Carbide ◽  
Tensile Strength ◽  
Elevated Temperatures

Silicon Carbide Base Ceramic Fiber Synthesis from Polycarbosilane-Modified Polymethylsilane Blend Polymers by Melt Spinning

2011 ◽  
Vol 675-677 ◽  
pp. 139-142
Author(s):  
Xin Xing ◽  
Lin Liu ◽  
Feng Cao ◽  
Xiao Dong Li ◽  
Zeng Yong Chu ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Tensile Strength ◽  
Thermal Oxidation ◽  
Melt Spinning ◽  
Ceramic Fiber ◽  
Ceramic Yield ◽  
Base Ceramic

A melt-spinnable precursor for SiC based fibers was prepared from blend polymers of polycarbosilane (PCS) and modified polymethylsilane (M-PMS). The blend polymers cured at 320°C are different from M-PMS and PCS. The ceramic yield of these blend polymers is about 83%. The C/Si ratio of M-PMS/PCS derived ceramics (pyrolyzed at 1250°C) is linear to the content of MPMS in M-PMS/PCS. After melt spinning, thermal oxidation curing, and pyrolysis, Si-C-O fibers were obtained. The diameter and the tensile strength of the resulted fibers are 16.5μm and 1.62GPa, respectively.

Tensile strength of HPSi3N4 at room and elevated temperatures

1987 ◽  
Vol 3 (3) ◽  
pp. 256
Author(s):  
Tatsuki Ohji ◽  
Seisuke Sakai ◽  
Masaru Ito ◽  
Yukihiko Yamauchi ◽  
Wataru Kanematsu ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Elevated Temperatures

Tensile Properties of Low Nickel Austenitic Stainless Steel at Elevated Temperatures

2012 ◽  
Vol 159 ◽  
pp. 346-350
Author(s):  
Shu Min Liu ◽  
Jian Bin Zhang
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Elevated Temperatures ◽  
Peak Stress ◽  
Temperature Curve ◽  
Delta Ferrite ◽  
Cross Sectional ◽  
Different Temperatures ◽  
Increasing Temperature ◽  
Reduction Percentage

The elevated temperature short-time tensile test with the sample of casting low nickel stainless steel was conducted on SHIMADZU AG-10 at ten temperatures 300, 500, 600, 700, 800, 950, 1000, 1050, 1100, and 1250°C, respectively. The stress-strain curves with the thermal deformation at the different temperatures, the peak stress intensity-temperature curve, and the reduction percentage of cross sectional area-temperature curve were obtained. Metallographic test samples were prepared and the morphology of deforming zone was observed by optical microscopy. The experimental results show that the tensile strength of the test samples decreases with increasing temperature. From 300 to 800°C, the work harding occurred and the tensile strength increases with increasing strain. The work softening occurred and the tensile strength decreases with increasing strain at temperatures of 800 to 1250°C. The minimum value of reduction percentage was measured at 800 °C. The austenite and delta-ferrite are the main phase in the tested samples. When the tensile temperatures are increased to 1200°C, the delta-ferrite became thinner and broke down to be spheroidized.

Alumina fibre FP

1980 ◽  
Vol 294 (1411) ◽  
pp. 411-417 ◽  
Keyword(s):  
Tensile Strength ◽  
Elevated Temperatures ◽  
Low Cost ◽  
Ferrous Metal ◽  
High Strength ◽  
Textile Fibre ◽  
Continuous Filament ◽  
Fibre Spinning ◽  
Metal Castings ◽  
Room Temperature Strength

A new experimental inorganic fibre currently under development at the Du Pont Company is a continuous filament, polycrystalline a-alumina yarn designated Fibre FP. This fibre is suitable for reinforcing a variety of materials, especially non-ferrous metal castings because of a combination of properties such as high strength and modulus, stability at elevated temperatures, composite castability and potentially low cost. Fibre FP, essentially > 99 % a-Al 2 O 3 , is made by a novel continuous ceramic fibre process utilizing low cost textile fibre spinning technology and is produced as a yarn containing 210 filaments. The modulus of Fibre FP is 379 GPa (55 x 10 6 lbf in -2 ) with a tensile strength of 1380 MPa (200000 lbf in -2 ). The room temperature strength and modulus of the fibre are retained to about 1000 °C. Recently, higher strength FP fibres with a tensile strength of 2070 MPa (300000 lbf in -2 ) have been demonstrated on a laboratory scale.

Sign in / Sign up

Export Citation Format

Share Document