以射出成型製備鎳銅鋅鐵氧磁體研究

Study of fabricating Ni-Cu-Zn ferriteti by injection molding

黃啟豪(Chi-Hau Huang)

指導教授 ： 湯華興

國立臺北科技大學/機電學院/製造科技研究所/碩士(2012年)

摘要

本研究以使用射出成型製程製作鎳銅鋅鐵氧磁體陶瓷。調整不同粉末含量(50%~53%)，黏結劑(聚丙烯與石蠟)的含量(1.0%~2.38%)以及表面活性劑含量(3.0%~9.0%)，以小型射出成型機以及大型射出成型機射出。小型射出成型機進行粉料成型性實驗，觀察粉料混練完成是否能順利進行射出成型製程，並進行溶劑脫脂、熱脫脂、燒結製程。大型射出射料進行新料射出成型、一次回收料以及二次回收料射出。觀察不同粉末含量以及不同黏結劑含量下材料之成型性。量測射出生坯的尺寸，結果顯示：無論小型射出射料或大型射出射料的都可以射出成型，小型射出生胚外觀較大型射出生胚差。生坯燒結後量測燒結品的密度與收縮率，結果顯示：陶瓷粉末含量提高可以提高燒結品的緻密度。而陶瓷粉末含量提高反而降低燒結品之收縮率。射料經過一次回收以及二次回收，粉料不經過重新混煉，直接將回收料粉碎後進入大型射出機射出，生胚燒結後量測燒結品的密度與收縮率，結果顯示：射料經過射出機台，不因為高溫使得黏結劑汽化，而燒結品的密度有所降低，收縮率因為回收的次數增加而稍有提高。

關鍵字

鎳鋅銅鐵氧磁體 ； 黏結劑 ； 陶瓷射出成型 ； 脫脂 ； 燒結

並列摘要

In this study, using the injection molding process produced Ni-Zn-Cu Ferrite ceramic. Adjust the content of different powder (50% ~ 53%), binder (polypropylene and paraffin) content (1.0% to 2.38%), and the content of surfactant (3.0% to 9.0%), small injection molding machines and large injection molding machine injection. Small injection molding machine for powder molding experiments to observe the powder mixing to complete the injection molding process can be smoothly carried out and the solvent debinding, thermal debinding, sintering process. The large injection injection of new material, injection molding, a recycled material and secondary recycled material injection. Observe the different powder content and binder content of the material formability. Measurement injection the size of the green body, the results show that: regardless of the small injection shot material or large injection shot material injection molding small injection of Health embryo appearance of larger injection poor students embryo. Measured in the green body sintered density and shrinkage of the sintered products: to improve the content of ceramic powder can improve the density of the sintered products. Ceramic powder to improve the contrary, to reduce the shrinkage of the sintered products. Shoot material after a recovery and secondary recovery, not been re-mixing powder, directly to the recovery of material crushed into large-scale injection molding machine injection Health embryo sintered measured the density and shrinkage of the sintered products, the results show: shoot material after injection machines, not because of the high temperature binder vaporization, while the density of the sintered products decreased the contraction rate improved slightly due to an increase in the number of recycling.

並列關鍵字

Ni-Zn-Cu Ferrite ； Ceramic injection molding ； binder ； debinding ； sintering

參考文獻

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