Microstructure, mechanical, tribological, and oxidizing properties of AlCrSiN/AlCrVN/AlCrNbN multilayer coatings with different modulated thicknesses

IF 6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2022-11-15 Epub Date: 2022-07-31 DOI:10.1016/j.ceramint.2022.07.228

Fangsheng Mei , Zhang Zhijian , Yu Yang , Lin Xiaoliang , Gao Jiangxiong , Yuan Tiechui , Lin Jianguo

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引用次数: 3

Abstract

Multilayer structure design is one of the most promising methods for improving the comprehensive performance of AlCrN-based hard coatings applied to cutting tools. In this study, four types of AlCrSiN/AlCrVN/AlCrNbN multilayer coatings, with different modulated thicknesses, were deposited to investigate their microstructure, mechanical, tribological, and oxidizing properties. All multilayer coatings exhibited grain growth along the crystallographic plane of (200) with a NaCl-type face-centered cubic (FCC) structure. The results show that, as the modulation thickness decreases from ∼35 nm to ∼10 nm, (1) the grain refinement effect is increasingly evident; (2) all multilayer coatings show a hardness of >30 GPa and an elastic modulus of >300 GPa. Both the ability to resist elastic strain to failure and the plastic deformation of multilayer coatings increase. In addition, their resistance to cracking reduces; (3) the wear rates of these multilayer coatings reduce successively from 1.78 × 10⁻¹⁶ m³ N⁻¹ m⁻¹ to 7.7 × 10⁻¹⁷ m³ N⁻¹ m⁻¹. This is attributed to an increase in self-lubricating VO_x and a decrease in adhesives from the counterparts; (4) the best high-temperature oxidation resistance was obtained for the multilayer coating with a modulated thickness of ∼15 nm.

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不同调制厚度AlCrSiN/AlCrVN/AlCrNbN多层涂层的显微组织、力学、摩擦学和氧化性能

多层结构设计是提高alcrn基硬质合金刀具涂层综合性能的最有前途的方法之一。在本研究中，沉积了四种不同调制厚度的AlCrSiN/AlCrVN/AlCrNbN多层涂层，研究了其微观结构、力学性能、摩擦学性能和氧化性能。所有多层涂层均沿(200)晶面生长，具有nacl型面心立方(FCC)结构。结果表明，随着调制厚度从~ 35 nm减小到~ 10 nm，(1)晶粒细化效应日益明显;(2)所有多层涂层的硬度为30 GPa，弹性模量为300 GPa。多层涂层的抗弹性应变破坏能力和抗塑性变形能力均有提高。此外，它们的抗开裂性降低;(3)多层涂层的磨损率从1.78 × 10−16 m3 N−1 m−1依次降低到7.7 × 10−17 m3 N−1 m−1。这是由于自润滑VOx的增加和相应粘合剂的减少;(4)调制厚度为~ 15 nm的多层涂层具有最佳的高温抗氧化性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.