探討奈米粒添加於潤滑油中的分散及表面改質，將氧化鋅、銅、鋁及二氧化鈦奈米粉體分別使用界面活性劑油酸 (Oleic Acid) 及壬基酚聚乙氧基醇 (NP-9)表面改質。應用田口法標準直交表分配實驗參數，以最少次數實驗取得之數據進行回應分析，於最佳參數組合實驗中分別得到氧化鋅 110 nm、銅 105 nm、鋁 65 nm及二氧化鈦 94 nm之相對最小的粒徑，添加於潤滑油中進行沉澱測試，鋁相較於氧化鋅、銅及二氧化鈦可獲得較佳的分散穩定性。

This study discussed dispersion and surface modification of nanoparticles applying in lubrication oil. It used oleic acid and nonylphenol polyethylene glycol ether to do surface modification with zinc oxide, copper, aluminum and titanium dioxide.
And it applied orthogonal array for arranging parameters of experiment through taguchi method. Therefore, it got minimum times of experiments for analyzing the response data. Through optimization of these parameters and got the minimum diameters for zinc oxide, copper, aluminum and titanium dioxide are 110 nm, 105 nm, 65 nm and 94 nm, respectively. In deposition test, aluminum had better stability compared with zinc oxide, copper and titanium dioxide.