高級珠光顏料一般是指在雲母薄片上披覆一層或多層高折射率的金屬氧化物薄膜，例如TiO2、Fe2O3等，而製成的一種顏料，在光線的照射下會產生珍珠般質感的光澤效果。人工合成雲母具透明度佳、表面光滑裂紋少、反射強、光澤佳等性質，故而取代天然雲母作為珠光顏料之基底材料。
本研究使用人工合成氟金雲母作為基底，分別使用硫酸氧鈦與無水氯化鐵作為原料，以化學液相沉積法披覆TiO2及Fe2O3製成珠光顏料。藉由分光光度儀探討水解條及原料劑量之改變，對色彩飽和度及色相的影響，並以掃描式電子顯微鏡(SEM)照片觀察表面披覆狀態，配合X-Ray螢光成分分析(XRF)、X-Ray繞射分析(XRD)對披覆成份的晶相及含量進行分析。根據實驗結果可得以下結論：
1. 合成雲母披覆TiO2之條件，以pH=0，95℃，煅燒750℃，2 hrs之條件披覆，能得到最佳彩度。
2. 合成雲母披覆Fe2O3之條件，以pH=3，85℃能得到緻密平滑的披覆層。

Pearlescent pigments generally refers to mica flakes coated with one or more layers of high refractive index metal oxide films, such as TiO2 and Fe2O3, so that’s presenting a pearl luster effect under the irradiation of light. Synthetic mica has the characteristics of good transparency, smooth surface, less cracks, reflecting strong, good gloss, which replace the natural mica pearlescent pigment used as the base material.
In this study, pearlescent pigments were prepared by the liquid chemical deposition method in the presence of titanyl sulfate and ferric chloride as the titanium source and iron source and fluorphlogopite as the substrate to be coated with TiO2 and Fe2O3. The influence of hydrolysis condition and dosage on the chroma and hue were measured using sphere spectrophotometer. The coating state on the surface as examined by SEM. The chemical composition and crystal phase of coated components were analyzed by XRF and XRD. According to the results of experiments, the following conclusions are obtained:
1. The optimum pH value and temperature for TiO2 coating on mica are: pH=0, 95℃, calcined at 750℃ for 2hrs. The best chroma of the products obtained is the best.
2. For Fe2O3, at pH=3, it is able to obtain a dense and smooth coated layer.

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