EM of mechanical plated Ti and tin coating on steel

1995 ◽  
Vol 53 ◽  
pp. 552-553
Author(s):  
K. Kashihara ◽  
W. A. Chiou ◽  
C. S. Lin ◽  
M. Meshii
Keyword(s):  
Amorphous Materials ◽  
Temperature Stability ◽  
Oxide Dispersion Strengthened ◽  
Interstitial Free ◽  
Matrix Composites ◽  
High Temperature Stability ◽  
Tin Coating ◽  
Electron Microscopic ◽  
Coating Materials ◽  
Fine Grained

Mechanical alloying, originally developed as a means to produce oxide dispersion strengthened alloys, has since been adopted for producing a wide variety of materials such as solid solution alloys, metal matrix composites, intermetallics, nanocrystalline and amorphous materials. It has also demonstrated as an efficient method for alloying gaseous elements by solid-gas reaction. Interest in using metal and metalloid nitrides as coating materials has been increased considerably in the past few years because of their special properties including extreme hardness, high temperature stability, high corrosion and wear resistance, and excellent conductivity. A new coating technique through the marriage of mechanical plating and nitriding has recently been developed in this laboratory. This paper presents an electron microscopic study of mechanically plated Ti and TiN coating.Commercially produced (Johnson Matthey, Inc.) fine-grained (325 mesh, or 44 μm) Ti (99%) powders were used as the starting coating material. Interstitial-free steel sheet (provided by Inland Steel) were cut to a size of 1.5 cm × 1.5 cm as the substrate.

The Influence of Degree of Polymerization on Precursor-Derived Si-B-C-N Ceramics

2010 ◽  
Vol 650 ◽  
pp. 355-360
Author(s):  
Xiang Geng ◽  
X. Huang ◽  
Ya Jing Li ◽  
Song Li ◽  
Xiao Bin Shi
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Amorphous Materials ◽  
Chemical Properties ◽  
Temperature Stability ◽  
High Hardness ◽  
Nitrogen Atmosphere ◽  
Degree Of Polymerization ◽  
Pyrolysis Process ◽  
High Temperature Stability

Precursor derived Si-B-C-N ceramic is a kind of amorphous materials with high hardness, low density, durability at extremely high temperature. The materials show a great potential to be used in the field of the Thermal Protective System (TPS). The physical states and chemical properties of the amorphous materials greatly depend on the starting materials. The effect of degree of polymerization (DP) of the precursor on the pyrolysis process and the characteristics of the amorphous Si-B-C-N materials are studied. The SiBCN-based preceramic polymer synthesized by dichloromethylvinylsilane, ammonia and BH3•SMe2. Dichloromethylvinylsilane reacted with ammonia and BH3•SMe2 in toluene or tetrahydrofuran (THF) as solvent in the presence of catalytic amounts of pyridine. The polymeric precursors were cured at low temperature to obtain solid-state precursors. Pyrolysis process of the solid-state precursors under various temperatures and carried out in nitrogen atmosphere. The results showed that DP of the precursor influences the pyrolysis process and the high temperature stability of the Si-B-C-N amorphous ceramics.

scholarly journals Optimization of compounding formulation for the development of high-preformance coating material using waste tire powder for gasket application

2021 ◽  
Vol 945 (1) ◽  
pp. 012059
Author(s):  
Chai Kah Siong ◽  
Mathialagan Muniyadi ◽  
Yamuna Munusamy
Keyword(s):  
Carbon Black ◽  
Surface Texture ◽  
High Performance ◽  
Temperature Stability ◽  
Filler Loading ◽  
Butadiene Rubber ◽  
High Temperature Stability ◽  
Coating Materials ◽  
Surface Appearance ◽  
Waste Tire

Abstract Nitrile butadiene rubber latex (NBRL) based gasket materials were extensively used in the past due to their excellent oil resistance, good abrasion resistance, and shock absorption as well as good high-temperature stability. Recently, carbon black has been introduced to further improve the oil absorption properties and thermal performance of the gasket materials which increased the total costing and makes the processing difficult due to the agglomeration of carbon black in NBRL. Thus, in this research, waste tire powder (WTP) was introduced to develop high-performance coating materials as an alternative to carbon black in NBRL gasket material. Optimization of new compounding formulation has been carried out by manipulating the WTP loading and hybrid WTP-carbon black filler loading. The filler loading was selected based on the desired surface texture and coating thickness. The experience was also carried out by varying the WTP, Sulphur, and plasticizer loading. The desired surface texture and thickness of coating materials were developed at WTP loading of 80phr and 90phr. Whereas, the optimum Sulphur loading was achieved at 1phr - 2phr, and plasticizer loading of 10phr and 15phr. From the experiments carried out, the optimum loading of WTP was 90phr which gives a fully contained gasket composite. Furthermore, DOP optimum loading is 15phr which gives a smooth surface appearance. Lastly, Sulphur with 1phr gives a more even surface texture as compared to 2phr loading.

UNS N06455

Alloy Digest ◽  
1989 ◽  
Vol 38 (1) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Stress Corrosion Cracking ◽  
Temperature Stability ◽  
Heat Treating ◽  
High Ductility ◽  
High Temperature Stability ◽  
Nickel Chromium ◽  
Long Time ◽  
Resistance To Stress

Abstract UNS NO6455 is a nickel-chromium-molybdenum alloy with outstanding high-temperature stability as shown by high ductility and corrosion resistance even after long-time aging in the range 1200-1900 F. The alloy also has excellent resistance to stress-corrosion cracking and to oxidizing atmospheres up to 1900 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-367. Producer or source: Nickel and nickel alloy producers.

UNS R54620

Alloy Digest ◽  
1987 ◽  
Vol 36 (7) ◽  
Keyword(s):  
Titanium Alloy ◽  
High Temperature ◽  
Time Use ◽  
Temperature Stability ◽  
High Strength ◽  
Heat Treating ◽  
High Temperature Stability ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Long Time

Abstract UNS No. R54620 is an alpha-beta titanium alloy. It has an excellent combination of tensile strength, creep strength, toughness and high-temperature stability that makes it suitable for service to 1050 F. It is recommended for use where high strength is required. It has outstanding advantages for long-time use at temperatures to 800 F. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-86. Producer or source: Titanium alloy mills.

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