scholarly journals Microstructure, wear and corrosion properties of NiB-TiC composite materials produced by powder metallurgy method

2019 ◽  
Vol 51 (3) ◽  
pp. 327-338 ◽  
Author(s):  
Mehmet Akkaş ◽  
Serkan Islak
Keyword(s):  
Composite Materials ◽  
Powder Metallurgy ◽  
Phase Formation ◽  
Powder Metallurgy Method ◽  
Corrosion Properties ◽  
Measuring Device ◽  
Wear And Corrosion ◽  
Wear And Corrosion Resistance ◽  
Cold Pressed ◽  
Wear Tests

In this study, NiB-TiC composite materials were produced using powder metallurgy. In the Ni-TiC-B powder mixture, TiC was fixed at a rate of 5 %, 5, 10 and 15 % boron was added and mechanical alloying was carried out. The prepared powder mixtures were cold pressed under pressure of 400 MPa and sintered in an argon atmosphere at 800?C for 2 hours. Microstructure, phase formation, hardness, wear and corrosion properties of the samples were investigated in detail. Scanning electron microscopy (SEM) was used for microstructure analysis and X-ray diffractogram (XRD) was used for phase formation detection. The hardness measurements of the samples were measured by a microhardness measuring device. Densities of the samples were determined by Archimedes' principle. The corrosion tests were performed potentiodynamic polarization curves of the composite materials in 3.5 % NaCl solution. Wear tests were carried out the composite materials under a load of 10 N. Results showed that by increasing the amount of B, the wear and corrosion resistance increased.

Mechanical, tribological, and corrosion properties of composite NiP-Al2O3 with different amount of particles

2021 ◽  
pp. 1-32
Author(s):  
Renato Pessoa ◽  
Carlos A H Laurindo ◽  
Michelle S Meruvia ◽  
Ricardo D Torres ◽  
Alexandre Mikowski ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Al2o3 Particle ◽  
Corrosion Properties ◽  
Mechanical Stirring ◽  
Wear And Corrosion ◽  
Sample Orientation ◽  
Aisi 4140 ◽  
Al2o3 Particles ◽  
Wear And Corrosion Resistance ◽  
Number Of Particles

Abstract In this study, the influence of Al2O3 particle amounts on the mechanical, tribological, and corrosion properties of the composite NiP-Al2O3 coating was evaluated. AISI 4140 steel was coated with NiP through an autocatalytic bath with the addition of Al2O3 particles maintained in suspension by mechanical stirring. Following, the coated samples were annealed at 600 °C to increase the hardness and to create an interdiffusion layer, which improves coating adhesion and corrosion resistance. The coating surface was characterized by SEM/EDS, XRD, microhardness, wear resistance, and corrosion tests. The results showed that the coating particles' amount depends on the bath agitation speed, the sample orientation during the deposition, and the volume of Al2O3 particles in the bath composition. Also, the number of particles in the coating affects the deposition kinetics, the thickness of the interdiffusion layer, which affects the wear and corrosion resistance.

scholarly journals Wear and corrosion resistant Mn-doped austenitic cast iron prepared by powder metallurgy method

2020 ◽  
Vol 9 (3) ◽  
pp. 6376-6385 ◽  
Author(s):  
Xiangrong Li ◽  
Junbo Liu ◽  
Ji Xiong ◽  
Lu Yang ◽  
Qingshan Gou ◽  
...  
Keyword(s):  
Cast Iron ◽  
Powder Metallurgy ◽  
Powder Metallurgy Method ◽  
Corrosion Resistant ◽  
Wear And Corrosion ◽  
Austenitic Cast Iron ◽  
Mn Doped

The Microstructure and Properties of CrNx Films Synthesized by Unbalanced Magnetron Sputtering

2008 ◽  
Vol 373-374 ◽  
pp. 176-179
Author(s):  
Yan Ping Wu ◽  
Yong Xiang Leng ◽  
Sun Hong ◽  
Sheng Fa Zhu ◽  
Nan Huang ◽  
...  
Keyword(s):  
Residual Stress ◽  
Corrosion Resistance ◽  
Magnetron Sputtering ◽  
Corrosion Properties ◽  
Unbalanced Magnetron Sputtering ◽  
Unbalanced Magnetron ◽  
Wear And Corrosion ◽  
Structure Thickness ◽  
Wear And Corrosion Resistance ◽  
N2 Flow Rate

CrNx film was widely used in mechanical engineering field because of its excellent anti-wear and corrosion resistance properties. While most of research was focused on mechanical properties, little attention had been paid to the corrosion resistance and residual stress of CrNx film . In this paper, CrNx films were deposited on silicon wafer (100) and iron substrate by unbalanced magnetron sputtering system (UBMS) at different N2 flow. Then the structure, thickness, residual stress, micro-hardness, wear-resistance and anti-corrosion properties of CrNx films were investigated. The results showed that the phase composition of CrNx films transformed from Cr, single phase Cr2N, Cr2N and CrN coexist to single CrN with the N2 flow rate increasing. The CrNx films composed with Cr2N phase, which deposited at 6 sccm N2 flow, had the highest microhardness and had higher compressive residual stress. Whereas the CrNx films with CrN and Cr2N phase coexist had the best wear and corrosion resistance.

Effect of TiN Coating on Functional Properties of Implant Titanium Alloy

2009 ◽  
Vol 147-149 ◽  
pp. 782-787 ◽  
Author(s):  
Małgorzata Grądzka-Dahlke ◽  
Anna Bukrym ◽  
Emilia Choińska
Keyword(s):  
Functional Properties ◽  
Surface Engineering ◽  
Tin Coating ◽  
Corrosion Properties ◽  
Joint Friction ◽  
Test Conditions ◽  
Wear And Corrosion ◽  
Adverse Influence ◽  
Implant Alloys ◽  
Wear And Corrosion Resistance

Surface engineering is considered a very prospective method of improving functional properties of implant alloys. Many publications reported the excellent influence of TiN coating on wear resistance as well as corrosion properties of titanium alloys. However, some authors pointed the danger of delamination of thin coating during exploitation. The aim of presented work was research of effect of TiN coating obtained by the RF-PCVD method on tribological and corrosion properties of Ti6Al4V alloy. Investigations performed by the simulator of hip joint friction as well as corrosion tests carried out at various temperatures showed adverse influence of TiN coating on wear and corrosion resistance. Analysis of presented date demonstrate that results strongly depend on test conditions.

Processing and Development of a New High Strength Metal Foam

2004 ◽  
Vol 851 ◽  
Author(s):  
A. Rabiei ◽  
Adrian T. O'Neill ◽  
Brian P. Neville
Keyword(s):  
Compressive Strength ◽  
Composite Materials ◽  
Powder Metallurgy ◽  
Hollow Sphere ◽  
Metal Foam ◽  
Cell Structure ◽  
Powder Metallurgy Method ◽  
Casting Technique ◽  
Closed Cell ◽  
Foam Composite

ABSTRACTThe research sited in this paper involves the development of new closed cell metal foam composite materials using powder metallurgy (PM) and gravity casting techniques. The foam is comprised of steel hollow spheres packed into a random dense arrangement, with the interstitial space between spheres occupied with a solid metal matrix. Using a casting technique, an aluminum alloy infiltrates the interstitial spaces between steel spheres. In a powder metallurgy method, steel spheres and iron powder are sintered to form a solid, closed cell structure. The measured densities of the Al-Fe composite foam and iron foam are 2.4 g/cm3 and 3.2 g/cm3, with relative densities of 42% and 41% respectively.The hollow sphere metal foam composite materials developed in this study displayed superior compressive strength as compared to hollow sphere foams currently being produced. The compressive strength of the cast Al-Fe foam averaged 67 MPa over a region of 10 to 50% strain, while the steel PM foam averaged 45 MPa over the same strain region. Densification began at approximately 50% for the cast foam and 55% for the PM foam.

Manufacture of nickel base composite materials with dispersed glass particles by the powder metallurgy method. Part I

1974 ◽  
Vol 13 (3) ◽  
pp. 224-226
Author(s):  
B. L. Rudoi ◽  
M. Kh. Shorshorov ◽  
G. M. Matveev ◽  
B. A. Borok ◽  
R. P. Shchegoleva
Keyword(s):  
Composite Materials ◽  
Powder Metallurgy ◽  
Powder Metallurgy Method ◽  
Base Composite ◽  
Nickel Base
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