ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.85

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor

ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.87

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor

ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.91

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor

ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.103

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor

ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.106

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor

ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.109

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor

ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.114

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor

摘要:

AbstractA simple method for determining the hardness or thickness of very thin (few micrometre) ceramic coatings is described. The methods employed are demonstrated for hard, thin coatings of titanium nitride, deposited by physical vapour deposition on to high speed steel substrates. A procedure has been formulated, using the microhardness technique, to carry out thickness, hardness, and adhesion quality control checks on coated items.

ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.117

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor

摘要:

AbstractA simple method for determining the hardness or thickness of very thin (few micrometre) ceramic coatings is described. The methods employed are demonstrated for hard, thin coatings of titanium nitride, deposited by physical vapour deposition on to high speed steel substrates. A procedure has been formulated, using the microhardness technique, to carry out thickness, hardness, and adhesion quality control checks on coated items.

ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.123

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor

摘要:

AbstractTitanium nitride coatings were deposited on various substrates by sputter ion plating and the state of stress was determined by the sin2Ψmethod. The lattice distortions which occur in the nitride coatings have been resolved in terms of a macros train and microstrain, as determined from the breadth of the xray reflections, and the origins of each are discussed. The internal stress present in a coating is shown to consist of two components, one thermal in origin and the other structural, its sign and magnitude varying with substrate material and bias potential. During cooling from the deposition temperature partial relaxation of this internal stress (macrostrain) occurs via two mechanisms: plastic deformation of the substrate and yield of the film. The internal stress was completely relaxed on dissolution of the substrate, accompanied by a decrease in the lattice parameter of the film. By comparing the results from substrates biased and unbiased during deposition, and measurements made on adherent and free standing coatings, the microstrain measurements have been separated into two parts, one due to distortions at the grain boundaries and one due to the presence of defects in the crystallites. A model is proposed that accounts for all the experimental observations; this also provides an explanation for the distortions from cubic symmetry reported in titanium and hafnium nitride films.

ISSN:0267-0844    

DOI:10.1179/sur.1987.3.2.138

出版商:Taylor&Francis    

年代:1987

数据来源: Taylor