The Effect of Substrate Surface Characteristics on AIP PVD Coating of Cemented Carbide Inserts and Their Cutting Performance

The effects of substrate surface treatment on TiAlN PVD coating on submicron cemented carbide was investigated. Surface roughness and morphology were improved by physical treatment such as micro blasting, brush lapping and plasma etching with decreased Co content in the surface layer. The Co content in the surface does not seem to affect coating adhesion or the quality considerably. The smoother surface induced by the surface treatment improved TiAlN adhesion and surface roughness. The insert treated by blasting and lapping before coating showed a better cutting performance than those with ultrasonic treatment. It was concluded that the substrate surface characteristics are closely related to the performance of the TiAlN coated inserts.

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The Effect of Substrate Surface Characteristics on AIP PVD Coating of Cemented Carbide Inserts and Their Cutting Performance

Progress in Powder Metallurgy - Materials Science Forum ◽

10.4028/0-87849-419-7.1241 ◽

2007 ◽

pp. 1241-1244

Author(s):

Dong Gil Ahn ◽

Kern Woo Lee ◽

Joo Wan Lee ◽

Moshe Sharon

Keyword(s):

Substrate Surface ◽

Surface Characteristics ◽

Cutting Performance ◽

Cemented Carbide ◽

Pvd Coating ◽

Carbide Inserts ◽

Cemented Carbide Inserts

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Surface roughness characterization of stainless steel after laser assisted machining

Mechanik ◽

10.17814/mechanik.2019.12.113 ◽

2019 ◽

Vol 92 (12) ◽

pp. 827-829 ◽

Cited By ~ 1

Author(s):

Agata Felusiak ◽

Martyna Wiciak-Pikuła ◽

Tadeusz Chwalczuk ◽

Piotr Kieruj ◽

Paweł Twardowski

Keyword(s):

Surface Roughness ◽

Stainless Steel ◽

Cutting Parameters ◽

Cemented Carbide ◽

Roughness Parameters ◽

Laser Assisted Machining ◽

Carbide Inserts ◽

Cemented Carbide Inserts

The paper presents the analysis of the influence of laser assisted machining (LAM) on various parameters of surface roughness of stainless steel. The tests were carried out for cemented carbide inserts with varying cutting parameters. In most cases, a significant reduction in the roughness parameters was observed using LAM.

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Deposition of Diamond Films on Smooth Surfaces of Cemented Carbide Inserts with Cobalt Boride Interlayers

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.315-316.205 ◽

2006 ◽

Vol 315-316 ◽

pp. 205-209

Author(s):

Y. Wang ◽

Y.P. Ma ◽

Fang Hong Sun ◽

Zhi Ming Zhang ◽

Ming Chen

Keyword(s):

Surface Roughness ◽

Diamond Films ◽

Fold Increase ◽

Cemented Carbide ◽

Widespread Application ◽

Coated Tools ◽

Key Factor ◽

Cobalt Boride ◽

Carbide Inserts ◽

Cemented Carbide Inserts

Improving adhesion and surface roughness of diamond films on WC–Co substrate is the key factor of the widespread application of diamond coated tools. A new pretreatment method has been performed for smooth Co-cemented carbide inserts in order to lower the surface roughness of diamond films under the premise of good adhesion between diamond films and substrates. The effect of the new pretreatment on the adhesion of the diamond films is investigated. Research results show that the boronization pretreatment can effectively suppress cobalt diffusion to the surface and avoid catalytic effect of Co at high temperature. This new pretreatment can avoid the surface roughening of inserts and ensure the deposition of smooth diamond films. Investigation shows that the optimum boronization compounding is a powder mixture of 70%B4C+15.5%KBF4+1.5% La2O3+13%Na2CO3. Adhesion between substrates and diamond films is evaluated by Rockwell A indentation tests and the cutting performance of the diamond-coated tools is investigated by the cutting tests. Diamond films on smooth cemented carbide inserts with cobalt boride interlayer have high adhesive strength and low surface roughness. Diamond-coated tools with boronization pretreatment have a 5-fold increase in tool life compared with untreated ones.

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