Performance of Arc-ion Plating Ti0.7Al0.3N Coatings on PCrNi3MoVA Steel

ZHANG Jian;GUO Ce-an;ZHANG Gang;HAO Shi-ming

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2011, Vol. 32 ›› Issue (6) : 697-702. DOI: 10.3969/j.issn.1000-1093.2011.06.011
Paper

Performance of Arc-ion Plating Ti0.7Al0.3N Coatings on PCrNi3MoVA Steel

  • ZHANG Jian1,2 , GUO Ce-an1,2, ZHANG Gang2, HAO Shi-ming1
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Abstract

A Ti0.7Al0.3N coating was deposited on PCrNi3MoVA steel for gun barrels by arc ion plating(AIP). The mechanical properties of the coatings are investigated and it is found that the hardness of the coatings increases approximately by a factor of 6.5 in comparison with that of the PCrNi3MoVA steel. The wear mechanism in Ti0.7Al0.3N coatings can be mainly characterized by adhesive and micro-abrasive wear while the dominant wear mechanism for the PCrNi3MoVA steel are severe abrasive wear and plastic flow. the coefficient of steady-state friction of the Ti0.7Al0.3N coatings ranged from 0.52 to 0.57, which is lower than that of the PCrNi3MoVA steel ranged from 0.73 to 0.78. The oxidation tests are performed at 750 ℃，800 ℃ and 850 ℃ in air for 3 h and it is found that due to dense oxides mixture film of Al203 and TiO2 on the coatings,the Ti0.7Al0.3N coatings exhibits excellent oxidation in air at 850 ℃ while severe oxidation happens to the PCrNi3MoVA steel at 750 ℃.The potential dynamic polarization measurements show that the corrosion potential of the Ti0.7Al0.3N coatings is approximately 200 mV higher than that of PCrNi3MoVA steel in 3.5 mass% NaCl solution, which indicates a great enhancement in corrosion resistance occurred to the Ti0.7Al0.3N coatings.

Key words

defectiveness and conservation of materials / PCrNi3MoVA steel / Ti0.7Al0.3N coatings / arc ion plating(AIP) / mechanical properties / oxidation / corrosion

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ZHANG Jian , GUO Ce-an, ZHANG Gang2, HAO Shi-ming. Performance of Arc-ion Plating Ti0.7Al0.3N Coatings on PCrNi3MoVA Steel. Acta Armamentarii. 2011, 32(6): 697-702 https://doi.org/10.3969/j.issn.1000-1093.2011.06.011

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