Wear resistance of structural steels after low-temperature cyaniding and carbonitriding

1975 ◽  
Vol 17 (11) ◽  
pp. 986-988
Author(s):  
Yu. M. Lakhtin ◽  
G. N. Neustroev ◽  
N. A. Airapetyan
Keyword(s):  
Wear Resistance ◽  
Low Temperature ◽  
Structural Steels

INFLUENCE OF TIME-TEMPERATURE PARAMETERS OF LONG-DURATION EXPOSURE ON TRANSFORMATIONS IN STRUCTURAL STEELS (review)

2021 ◽  
pp. 15-23
Author(s):  
E.A. Eliseev ◽  
◽  
G.S. Sevalnev ◽  
A.V. Doroshenko ◽  
M.E. Druzhinina ◽  
...  
Keyword(s):  
Low Temperature ◽  
Chemical Elements ◽  
Structural Steels ◽  
Holding Time ◽  
Temper Brittleness ◽  
Brittleness Temperature ◽  
Temperature Range ◽  
Long Duration ◽  
Reversible Temper ◽  
Reversible Temper Brittleness

Low-temperature nitriding of steels is usually carried out in the temperature range of development of reversible temper brittleness. The holding time at these temperatures significantly exceeds the holding time during normal tempering, which can negatively affect the properties of steel. The article considers theories that explain the processes occurring in steels in the temper brittleness temperature range. It may be concluded that views linking the embrittlement of steel with alloying elements such as nickel in its content are not confirmed by the experiments; at the same time ideas based on classical views about the diffusion of chemical elements explain the processes in steel better.

Wear Characteristics of Low Temperature Degradation-Free Zirconia/Alumina Composites in a Point Contact Condition

2007 ◽  
Vol 342-343 ◽  
pp. 557-560
Author(s):  
Kwon Yong Lee ◽  
Hwan Kim ◽  
D.W. Kim ◽  
Dae Joon Kim ◽  
Myung Hyun Lee ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Low Temperature ◽  
Bovine Serum ◽  
Sliding Wear ◽  
Point Contact ◽  
Dry Sliding Wear ◽  
Sliding Motion ◽  
Alumina Composites ◽  
Pin On Disk ◽  
Wear Tests

The sliding wear of four different compositions of novel low temperature degradation-free zirconia/alumina (LTD-free Z/A) composites were characterized in a ceramicceramic point contact pair. The wear tests were performed by a pin-on-disk type wear tester in a linear reciprocal sliding motion with a point contact in both dry and bovine serum lubricated conditions at room temperature. For the dry sliding wear tests, AZ-2 (20 vol% (Y,Nb,Ce)-TZP/ 80 vol% Al2O3) showed the best wear resistance among four kinds of LTD-free Z/A composites. For the bovine serum lubricated sliding wear tests, wear was too little to be measured for all kinds of Z/A composites. These novel LTD-free Z/A composites having excellent wear resistance demonstrated a potential as the alternative materials for the ceramic- ceramic contact pairs of femoral head and acetabular liner in total hip replacement.

A Low Temperature CVD Process for TiN Coatings

1989 ◽  
Vol 168 ◽  
Author(s):  
A. Aguero ◽  
D. Little ◽  
P. Lowden
Keyword(s):  
Wear Resistance ◽  
Low Temperature ◽  
Titanium Nitride ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Reduced Pressure ◽  
Tin Coatings ◽  
Excellent Adhesion ◽  
Low Temperature Process

AbstractA novel low temperature process for the chemical vapour deposition of titanium nitride films has been developed. Titanium sub-halides generated “in situ” by chlorination of titanium pellets are subsequently reacted with ammonia at reduced pressure and temperatures of 450–600° C. The coatings have excellent adhesion and wear resistance. A description of the process and the properties of the coatings produced by it will be presented.

Martensitic Structural Steels for Increased Strength and Wear Resistance

2007 ◽  
pp. 4515-4520
Author(s):  
Bertil Ahlblom ◽  
Per Hansson ◽  
Torbjorn Narström
Keyword(s):  
Wear Resistance ◽  
Structural Steels ◽  
Increased Strength

scholarly journals Effect of Adjusted Gas Nitriding Parameters on Microstructure and Wear Resistance of HVOF-Sprayed AISI 316L Coatings

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1760 ◽  
Author(s):  
Pia Kutschmann ◽  
Thomas Lindner ◽  
Kristian Börner ◽  
Ulrich Reese ◽  
Thomas Lampke
Keyword(s):  
Wear Resistance ◽  
Low Temperature ◽  
Process Management ◽  
Surface Activation ◽  
Aisi 316L ◽  
Spray Coatings ◽  
Gas Nitriding ◽  
Surface Distance ◽  
Diffusion Depth ◽  
Sprayed Coating

Gas nitriding is known as a convenient process to improve the wear resistance of steel components. A precipitation-free hardening by low-temperature processes is established to retain the good corrosion resistance of stainless steel. In cases of thermal spray coatings, the interstitial solvation is achieved without an additional surface activation step. The open porosity permits the penetration of the donator media and leads to a structural diffusion. An inhomogeneous diffusion enrichment occurs at the single spray particle edges within the coating’s microstructure. A decreasing diffusion depth is found with increasing surface distance. The present study investigates an adjusted process management for low-temperature gas nitriding of high velocity oxy-fuel-sprayed AISI 316L coatings. To maintain a homogeneous diffusion depth within the coating, a pressure modulation during the process is studied. Additionally, the use of cracked gas as donator is examined. The process management is designed without an additional surface activation step. Regardless of surface distance, microstructural investigations reveal a homogeneous diffusion depth by a reduced processing time. The constant hardening depth allows a reliable prediction of the coatings’ properties. An enhanced hardness and improved wear resistance is found in comparison with the as-sprayed coating condition.

Effect of Carburizing Atmosphere Proportion on Low Temperature Plasma Carburizing of Austenitic Stainless Steel

2014 ◽  
Vol 598 ◽  
pp. 90-93 ◽  
Author(s):  
Xing Sheng Tong ◽  
Ting Zhang ◽  
Wei Ye
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Friction Coefficient ◽  
Austenitic Stainless Steel ◽  
Low Temperature ◽  
Corrosion Rate ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Plasma Carburizing

In this study, in order to explore a suitable method to obtain a better wear resistance and corrosion resistance of austenitic stainless steel, low temperature plasma carburizing technology has been studied. Research on the properties of austenitic stainless steel under different carburizing atmosphere proportion, with hardness, wear resistance and corrosion resistance as the properties characterization. The results shows that C3H8:H2=1:40 have better properties with the hardness of 950 HV0.05, the friction coefficient of about 0.25, which showed a better wear resistance. And also the corrosion rate of about 20.3g/m2·h showed a better corrosion resistance.

Formation, Characterization, and Wear Behavior of Aluminide Coating on Mirrax® ESR Steel by Low-Temperature Aluminizing Process

2020 ◽  
Vol 143 (1) ◽  
Author(s):  
Tuba Yener ◽  
Azmi Erdogan ◽  
Mustafa Sabri Gök ◽  
Sakin Zeytin
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Low Temperature ◽  
Room Temperature ◽  
Wear Behavior ◽  
Aluminide Coating ◽  
Pure Aluminum ◽  
Dry Sliding Wear ◽  
Thickness Variation ◽  
Wear Tests

Abstract The aim of this study was to investigate the effect of low-temperature aluminizing process on the microstructure and dry sliding wear properties of Mirrax steel. Low-temperature aluminizing process was applied on Mirrax steel at 600, 650, and 700 °C for 2, 4, and 6 h. The packs for the process were prepared using pure aluminum powder as aluminum deposition source. Ammonium chloride NH4Cl and Seydisehir Al2O3 powder were used as the activator and the inert filler, respectively. Scanning electron microscope (SEM)/energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) analysis were applied for characterization of the coating surfaces. The through-thickness variation in the layer microstructure was determined and it was found to vary between 1 µm and 45 µm which increased with higher process temperature and time. After the deposition process, the coating layer hardness increased to 1000 HVN, whereas the hardness of the matrix was 250 HVN. The wear tests were performed using a ball-on-disc tribometer under 5 N load at room temperature and 500 °C on aluminized and untreated Mirrax steel. In both room temperature and high-temperature wear tests, it was determined that the aluminizing process increased the wear resistance of Mirrax steel. Increasing aluminizing time and temperature also increased the wear resistance. The uncoated and thin-coated samples generally exhibited wear in the form of plastic deformation and adhesion related ruptures. A high degree of tribological layer was observed on the wear trace on samples with high coating thickness, especially in high-temperature tests. Therefore, the volume losses in these samples were induced by fatigue crack formation and delamination.

Enhanced Wear Resistance of AISI-316 Steel by Low-Temperature Molybdenum Cathodic Cage Plasma Deposition

2021 ◽  
Author(s):  
M. Naeem ◽  
V. C. Fortaleza ◽  
P. L. C. Serra ◽  
C. L. Lima ◽  
T. H. C. Costa ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Low Temperature ◽  
Plasma Deposition ◽  
Aisi 316
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