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TW201304947A - 鍍膜件及其製造方法 - Google Patents

鍍膜件及其製造方法 Download PDF

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TW201304947A
TW201304947A TW100127440A TW100127440A TW201304947A TW 201304947 A TW201304947 A TW 201304947A TW 100127440 A TW100127440 A TW 100127440A TW 100127440 A TW100127440 A TW 100127440A TW 201304947 A TW201304947 A TW 201304947A
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film layer
target
mass percentage
substrate
coating
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Wen-Rong Chen
Huann-Wu Chiang
Cheng-Shi Chen
Cong Li
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Hon Hai Prec Ind Co Ltd
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Abstract

本發明提供一種鍍膜件,包括基體、依次形成於基體上的呈白色的第一膜層及第二膜層;該第一膜層主要由Zn和O兩種元素組成;該第二膜層主要由金屬或非金屬M、O及N三種元素組成,其中M可為Al或Si。該鍍膜件呈現出純正的骨瓷般質感的外觀。本發明還提供了所述鍍膜件的製造方法。

Description

鍍膜件及其製造方法
本發明涉及一種鍍膜件及其製造方法,尤其涉及一種具有骨瓷質感的鍍膜件及其製造方法。
習知技術,通常採用噴塗、陽極處理及PVD鍍膜等技術於電子產品(如手機、PDA等)的殼體表面形成裝飾性膜層,以使殼體呈現出彩色的外觀。然而,上述殼體雖然呈現出彩色的外觀,卻不能呈現出如骨瓷般的潔白、細膩、通透、清潔等視覺或外觀效果。
傳統的骨瓷產品的製作方法係以動物骨灰(主要成分為Ca3(PO4)2)、優質高嶺土及石英為基本原料,經過高溫素燒和低溫釉燒兩次燒製而成,其製作工藝複雜、成品率低、價格十分高昂,因而難以實現大批量地工業生產。此外,傳統的骨瓷產品還具有輕脆易碎的特點。
鑒於此,本發明提供一種具有骨瓷質感的鍍膜件。
另外,本發明還提供一種上述鍍膜件的製造方法。
一種鍍膜件,包括基體、依次形成於基體上的呈白色的第一膜層及第二膜層;該第一膜層主要由Zn和O兩種元素組成;該第二膜層主要由Al和Si中的任一種、O及N三種元素組成。
一種鍍膜件的製造方法,其包括如下步驟:
提供基體;
採用真空鍍膜法,以鋅靶為靶材,在該基體的表面形成一鋅層;
關閉所述鋅靶,使用氧氣對該鋅層進行熱處理製得第一膜層,該第一膜層主要由Zn和O兩種元素組成;
採用真空鍍膜法,以鋁、鋁合金、矽或矽合金為靶材,以氧氣及氮氣為反應氣體,在該第一膜層上形成第二膜層,該第二膜層主要由Al和Si中的任一種、O及N三種元素組成;
對所述第二膜層的表面進行精拋處理。
所述第一膜層呈白色,覆蓋於該第一膜層上濺射無色透明的第二膜層,該二膜層結合使該鍍膜件呈現出純正的骨瓷般質感的外觀。相較於傳統的骨瓷產品,該鍍膜件的製作方法簡單、良率較高、生產成本較低且幾乎沒有環境污染,可實現大批量地工業生產,因而可運用於3C電子產品殼體、建築裝飾件、汽車裝飾件及家居生活用品等諸多產品中。
請參閱圖1,本發明一較佳實施例的鍍膜件10包括基體11、依次形成於基體11上的第一膜層13及第二膜層15。該鍍膜件10可以係電子裝置外殼,亦可以係鐘錶外殼、金屬衛浴件及建築用件。
基體11的材質為金屬或非金屬,其中金屬可為不銹鋼、鋁、鋁合金、鎂或鎂合金,非金屬可為塑膠或玻璃。
所述第一膜層13主要由鋅(Zn)和氧(O)兩種元素組成,其中Zn的質量百分含量為70~78%,O的質量百分含量為22~30%。所述第一膜層13可藉由真空鍍膜並結合氧氣熱處理的方式製得。所述第一膜層13的厚度為5~10μm。所述第一膜層13的色度區域於CIE LAB表色系統的L*座標為89至93,呈白色,為鍍膜件10提供如陶瓷般的外觀顏色。
所述第二膜層15主要由金屬或非金屬元素M、O及N三種元素組成,其中M可為鋁(Al)或矽(Si)。當M為Al時,該第二膜層15中Al的質量百分含量為60~70%,O的質量百分含量為25~28%,N的質量百分含量為2~15%。當M為Si時,該第二膜層15中Si的質量百分含量為65~75%,O的質量百分含量為17~22%,N的質量百分含量為3~18%。該第二膜層15由平均粒徑為10~15nm的奈米顆粒組成,質地均勻緻密。第二膜層15的粗糙度Ra為10~30nm。
所述第二膜層15呈無色透明的類玻璃狀外觀。該第二膜層15可藉由磁控濺射、真空蒸鍍等真空鍍膜的方式形成。所述第二膜層15的厚度可為2~4μm。
所述呈白色的第一膜層13與無色透明的所述第二膜層15的結合可使所述鍍膜件10呈現骨瓷質感的外觀。從該第二膜層15一側測試鍍膜件10表面的60°角光澤度為85~100;色度區域於CIE LAB表色系統的L*座標為85至89,a*座標為-0.5至0.5,b*座標為-0.5至0.5,呈現為白色。
本發明鍍膜件10的製造方法包括以下步驟:
提供基體11,基體11的材質為金屬或非金屬,其中金屬可為不銹鋼、鋁、鋁合金、鎂或鎂合金,非金屬可為塑膠或玻璃。
將基體11進行預處理。該預處理包括分別用去離子水和無水乙醇對基體11表面進行擦拭、以及用丙酮溶液對基體11進行超聲波清洗等步驟。
對經上述處理後的基體11的表面進行電漿清洗,以進一步去除基體11表面的油污,以及改善基體11表面與後續鍍層的結合力。結合參閱圖2,提供一真空鍍膜機100,該真空鍍膜機100包括一鍍膜室20及連接於鍍膜室20的一真空泵30,真空泵30用以對鍍膜室20抽真空。該鍍膜室20內設有轉架(未圖示)、相對設置的二第一靶材22及相對設置的二第二靶材23。轉架帶動基體11沿圓形的軌跡21公轉,且基體11在沿軌跡21公轉時亦自轉。每一第一靶材22及每一第二靶材23的兩端均設有氣源通道24,氣體經該氣源通道24進入所述鍍膜室20中。其中,所述第一靶材22為鋅靶;所述第二靶材23為鋁合金靶或矽合金靶時,其中鋁或矽的質量百分含量為85~90%。
該電漿清洗的具體操作及工藝參數可為:將基體11固定於真空鍍膜機100的鍍膜室20中的轉架上,將該鍍膜室20抽真空至8.0×10-3Pa,然後向鍍膜室20內通入流量約為100~400sccm(標準狀態毫升/分鐘)的氬氣(純度為99.999%),並施加-200~-400V的偏壓於基體11,對基體11的表面進行電漿清洗,清洗時間為3~20min。
採用磁控濺射鍍膜法與熱處理結合,在經電漿清洗後的基體11上形成第一膜層13。形成所述第一膜層13的步驟如下:
首先,在所述基體11上濺射一鋅層(未圖示)。濺射該鋅層的具體操作及參數為:開啟所述第一靶材22,並設定第一靶材22的功率為2~3kw;以氬氣為工作氣體,調節氬氣的流量為100~300sccm;對基體11施加-100~-200V的偏壓,並加熱所述鍍膜室20至溫度為300~500℃(即鍍膜溫度為300~500℃),濺射時間為1~2h。
然後,對上述鋅層進行熱處理。停止通入所述氬氣,並關閉所述第一靶材22,保持所述鍍膜室20的溫度不變,通入流量為80~150sccm氧氣,對該鋅層進行熱處理,熱處理的時間為20~60min。該熱處理使所述鋅層被氧化成白色的氧化鋅層,從而獲得第一膜層13。所述第一膜層13的色度區域於CIE LAB表色系統的L*座標為80至90,a*座標為-0.5至0.5,b*座標為-0.5至0.5。所述第一膜層13的厚度為5~10μm。
由於直接以鋅靶為靶材,以氧氣為反應氣體濺射獲得的Zn-O膜層,難以保證該膜層中Zn與O的原子個數比大約為1:1,如此無法使該Zn-O膜層呈現出白色。而經上述方法獲得的第一膜層13中Zn與O的原子個數比大約為1:1,如此可使Zn與O充分結合形成ZnO,進而使所述第一膜層13呈現出白色。
採用磁控濺射鍍膜法,在所述第一膜層13上濺射第二膜層15。開啟第二靶材23,並設定第二靶材23的功率為5~10kw;以氧氣及氮氣為反應氣體,調節氧氣的流量為50~200sccm、氮氣的流量為80~300sccm,以氬氣為工作氣體,調節氬氣的流量為100~300sccm。濺鍍時,對基體11施加-100~-300V的偏壓,並加熱所述鍍膜室20至溫度為20~200℃(即鍍膜溫度為20~200℃),鍍膜時間為50~80min。
提供一精拋機(圖未示),對所述第二膜層15的表面進行精拋處理,用以提高所述第二膜層15的光澤度和透明度,從而使所述鍍膜件10呈現出通透、高光澤的外觀。所述精拋機包括一布輪,將含有氧化鋁粉末的懸浮狀水溶液塗覆在該布輪上,對所述基體11的第二膜層15的表面進行精拋,精拋的時間為10~15min。經過該精拋處理後,從該第二膜層15表面的60°角光澤度為85~100。
可以理解的,所述第二膜層15還可藉由真空蒸鍍及電弧電漿鍍等真空鍍膜的方式形成。
所述第一膜層13呈白色,於該第一膜層13表面濺射無色透明的第二膜層15,所述第一膜層13與第二膜層15結合使該鍍膜件10呈現出純正的骨瓷質感的外觀。相較於傳統的骨瓷產品,該鍍膜件10的製作方法簡單、良率較高、生產成本較低且幾乎沒有環境污染,可實現大批量地工業生產,因而可運用於3C電子產品殼體、建築裝飾件、汽車裝飾件及家居生活用品等諸多產品中。
此外,相較於傳統的骨瓷產品,不銹鋼、鋁、鋁合金、鎂或鎂合金等金屬或塑膠材質的基體11可增強所述鍍膜件10的韌性,因而所述鍍膜件10還具有不易碎的特點;且當基體11的材質為鋁、鋁合金、鎂或鎂合金等輕金屬或塑膠時,所述鍍膜件10還能呈現出較傳統的骨瓷產品更為輕盈的質地。
10...鍍膜件
11...基體
13...第一膜層
15...第二膜層
100...鍍膜機
20...鍍膜室
30...真空泵
21...軌跡
22...第一靶材
23...第二靶材
24...氣源通道
圖1係本發明一較佳實施例鍍膜件的剖視圖;
圖2係本發明一較佳實施例真空鍍膜機的示意圖。
10...鍍膜件
11...基體
13...第一膜層
15...第二膜層

Claims (13)

  1. 一種鍍膜件,包括基體,其改良在於:該鍍膜件還包括依次形成於基體上的呈白色的第一膜層及第二膜層;該第一膜層主要由Zn和O兩種元素組成;該第二膜層主要由Al和Si中的任一種、O及N三種元素組成。
  2. 如申請專利範圍第1項所述之鍍膜件,其中所述第一膜層中Zn的質量百分含量為70~78%,O的質量百分含量為22~30%。
  3. 如申請專利範圍第1項所述之鍍膜件,其中所述第一膜層的色度區域於CIE LAB表色系統的L*座標為89至93,a*座標為-0.5至0.5,b*座標為-0.5至0.5。
  4. 如申請專利範圍第1項所述之鍍膜件,其中當第二膜層主要由Al、O及N三種元素組成時,其中Al的質量百分含量為60~70%,O的質量百分含量為25~28%,N的質量百分含量為2~15%。
  5. 如申請專利範圍第1項所述之鍍膜件,其中當第二膜層主要由Si、O及N三種元素組成時,其中Si的質量百分含量為65~75%,O的質量百分含量為17~22%,N的質量百分含量為3~18%。
  6. 如申請專利範圍第1項所述之鍍膜件,其中所述第二膜層由平均粒徑為10~15nm的奈米顆粒組成,第二膜層的粗糙度Ra為10~30nm。
  7. 如申請專利範圍第1項所述之鍍膜件,其中所述第一膜層的厚度為5~10μm,所述第二膜層的厚度為2~4μm。
  8. 如申請專利範圍第1項所述之鍍膜件,其中所述鍍膜件於該第二膜層表面的60°角光澤度為85~100,色度區域於CIE LAB表色系統的L*座標為85至89,a*座標為-0.5至0.5,b*座標為-0.5至0.5。
  9. 一種鍍膜件的製造方法,其包括如下步驟:
    提供基體;
    採用真空鍍膜法,以鋅靶為靶材,在該基體的表面形成一鋅層;
    關閉所述鋅靶,使用氧氣對該鋅層進行熱處理製得第一膜層,該第一膜層主要由Zn和O兩種元素組成;
    採用真空鍍膜法,以鋁、鋁合金、矽或矽合金為靶材,以氧氣及氮氣為反應氣體,在該第一膜層上形成第二膜層,該第二膜層主要由Al和Si中的任一種、O及N三種元素組成;
    對所述第二膜層的表面進行精拋處理。
  10. 如申請專利範圍第9項所述之鍍膜件的製造方法,其中形成所述鋅層的方法為:採用磁控濺射鍍膜法,設置鋅靶的功率為2~3kw,以氬氣為工作氣體,氬氣的流量為100~300sccm,施加於基體的偏壓為-100~-300V,鍍膜溫度為20~200℃,鍍膜時間為1~2h。
  11. 如申請專利範圍第9項所述之鍍膜件的製造方法,其中對所述鋅層進行熱處理待工藝參數為:氧氣的流量為80~150sccm,熱處理溫度為20~200℃,時間為20~60min。
  12. 如申請專利範圍第9項所述之鍍膜件的製造方法,其中形成所述第二膜層的方法為:採用磁控濺射鍍膜法,設置鋁靶、鋁合金靶、矽靶或矽合金靶的功率為5~10kw,氧氣的流量為50~200sccm、氮氣的流量為80~300sccm,以氬氣為工作氣體,氬氣的流量為100~300sccm,施加於基體的偏壓為-100~-300V,鍍膜溫度為20~200℃,鍍膜時間為50~80min;所述鋁合金靶材中鋁的質量百分含量為85~90%,矽合金靶材中矽的質量百分含量為85~90%。
  13. 如申請專利範圍第9項所述之鍍膜件的製造方法,其中所述精拋處理的方法為:提供一精拋機,所述精拋機包括一布輪,將含有氧化鋁粉末的懸浮狀水溶液塗覆在該布輪上,對所述第二膜層的表面進行精拋,精拋的時間為10~15min。
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