無電鍍鎳磷奈米二氧化鈦複合鍍層性質之研究

Study of Properties of Ectroless Plating of Ni–P–nano TiO2 Composite Coatings

邱創聖(chuan-sheng chiou)

指導教授 ： 黃社振

國立虎尾科技大學/工程學院/機械與機電工程研究所/碩士(2011年)

https://doi.org/10.6827/NFU.2011.00008

摘要

本研究之主要目的是在於利用氧化還原反應的方法，以無電鍍鎳奈米二氧化鈦複合鍍層於中碳鋼S45C基材上，藉由實驗設計方法以改變無電鍍鎳製程與熱處理參數。複合鍍層控制包括二氧化鈦粉末粒度大小、鍍浴濃度及反應時間等三個參數，熱處理控制參數為熱處理時間及溫度。然後利用多功能磨耗試驗儀對於熱處理前後進行摩擦力及磨耗量測，接著利用表面粗度儀和表面輪廓儀量測磨耗前後3D表面粗糙度參數及磨耗量，並以掃描式電子顯微鏡觀察複合鍍層微觀磨耗組織，以微小維氏硬度試驗機進行維氏硬度之量測，最後藉由反應曲面瞭解無電鍍鎳複合鍍層製程參數對磨耗產生之影響。
由無電鍍奈米二氧化鈦複合鍍層之實驗結果分析顯示，熱處理可使二氧化鈦粉末與鍍層結構改變，使鍍膜硬度明顯增加，在磨耗方面，得知二氧化鈦粉末粒度為20nm及在400℃熱處理後磨耗量為最小，其磨耗量約為未熱處理之減少兩倍，因此可知其熱處理可有效提升鍍膜硬度及其耐磨性。

關鍵字

無電鍍鎳 ； Ni-P-TiO2複合鍍層 ； 奈米二氧化鈦 ； 微硬度 ； 反應曲面 ； 磨耗抵抗

並列摘要

The main purpose of this study is to obtain electroless NiP containing TiO2 nano-particles composite coating on medium carbon steel, to investigate the influence of electroless plating and heat treatment process parameters on the coating structure, hardness and their wear property of the deposits. The microstructure and 3D surface roughness of the deposit surfaces were analyzed by scanning electron microscopy and profilomrtry, respectively. The hardness of the coating was measured by micro-hardness tester before and after heat treatment, wear resistance performance of the composite coating were measured using a block on ring tribological tester. The results indicate that the micro-hardness of the composite coating after heat treatment of titanium dioxide nano-powder is significantly increased as compared with the as-deposited coatings. The composite coating obtained at heat treatment temperature of 400℃ and titanium dioxide powder particle size of 20nm possesses optimal wear resistance.

並列關鍵字

Electroless Ni-P ； Composite coating ； Nano-particles TiO2 ； Heat treatment , ； Hardness

參考文獻

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