201217164 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種殼體及其製造方法。 [先前技術] [0002] 真空鍍膜技術（PVD)係一種#常環保的成膜技術。以真 〇 [0003] 〇 空鍍膜的方式所形成的膜層具有高硬度、高耐磨性、良 好的化學穩定性、與基體結合牢固以及亮麗的金屬外觀 等優點，因此真空鍍膜在鎂、鎂合金及不銹鋼等金屬基 材表面裝飾性處理領域的應用越來越廣。 .·. ' , ：；· ；： 然而’由於鎂或鎂合金的標準電極電也彳艮低，且PVD裝飾 性塗層本身不可避免的會存在微小的冗隙，如針孔、裂 紋’並且鎂及鎂合金基體會發生微電地腐蝕作用，形成 很大的膜-基電位差，加快了微電池的腐餘速率，因此， 直接於鎂或鎂合金基體表面鍍覆諸如TiN層、TiN層、 CrN層等具有色彩的pVD裝飾性蜜層’不能有效防止所述 鎂或鎂合金基體發生霉化學腐蝕，同時該PVD裝飾性塗層 本身也會發生異色、政落等現象。 [0004] 【發明内容】 鑒於此，提供一種具有良好的耐腐蝕性及農飾性外觀的 殼體。 [0005] 另外，還提供一種上述殼體的製造方法。 [0006] 一種殼體，包括鎂或鎂合金基體，一形成於鎂或鎂合金 基體表面的防腐蝕層，及一形成於防腐蝕層表面的色彩 層，所述防腐蝕層為以層^ 099137090 表單編號A0101 第3頁/共10頁 0992064698-0 201217164 [0007] 一種殼體的製造方法，包括以下步驟： [0008] 提供鎂或鎂合金基體；於該鎂或鎂合金基體上磁控濺射 形成防腐蝕層，該防腐蝕層為Mg層；於該防腐蝕層上磁 控濺射形成色彩層。 [0009] 所述殼體的製造方法，籍由磁控濺射法依次於鎂或鎂合 金基體上形成鎂的防腐蝕層及具有裝飾性的色彩層。當 殼體處於腐蝕性介質中時，由於所述防腐蝕層與鎂或鎂 合金基體有效降低了膜-基電位差，使殼體難以形成發生 電化學腐蝕所需要的陰極與陽極，從而提高了殼體的耐 腐蝕性。所述殼體耐腐蝕性提高的同時，還可避免所述 色彩層發生異色、脫落等失效現象，從而使該殼體經長 時間使用後仍具有較好的裝飾性外觀。 【實施方式】 [0010] 請參閱圖1，本發明一較佳實施例的殼體10包括鎂或鎂合 金基體11、依次形成於該鎂或鎂合金基體11上的防腐蝕 層13及色彩層15。該殼體10可以為3C電子產品的殼體， 也可為工業、建築用件及汽車等交通工具的零部件等。 [0011] 所述防腐蝕層13為Mg層，其厚度為1.0〜3.0/zm。 [0012] 所述色彩層15為Ti-N層，其厚度為1.0~3.0#m。 [0013] 可以理解，所述色彩層15還可以為Cr-N或其他具有裝飾 性的色彩層。 [0014] 所述防腐蝕層1 3及色彩層1 5均籍由磁控濺射法沉積形成 099137090 表單編號A0101 第4頁/共10頁 0992064698-0 201217164 [0015] 本發明一較佳實施例的製造所述殼體ι〇的方法主要包括 如下步驟： [0016] 提供鎂或鎂合金基體11，並對鎂或鎂合金基體n依次進 行研磨及電解拋光。電解拋光後，再依次用去離子水和 無水乙醇對該鎂或鎂合金基體丨丨表面進行擦拭。再將擦 拭後的鎂或鎂合金基體11放入盛裝有丙酮溶液的超聲波 清洗器中進行震動清洗，以除去鎂或鎂合金基體n表面 的雜質和油污等。清洗完畢後吹幹備用。 Ο [0017]對經上述處理後的鎂或鎂合金基邋11的表面進行氬氣電 漿清洗，進一步去除鎂或鎂合金基體丨丨表面的油污，以 改善鎂或鎂合金基體11表面與後績塗層的結合力。該電 漿清洗的具體操作及工藝參數可為：將鎮或潜合金基體 11放入一磁控濺射鍍膜機（圖未示）的鍍膜室内，對該 鍍膜室進行抽真空處理至真空度為1. 〇xl〇_3pa，以 250~500sccm (標準狀態毫升/分鐘）的流量向鍍膜室中 通入純度為99· 999%的氬氣，於鎂或鎂合金基體11上施 Ο 加-300 — 800V的偏壓，對鎂或鎂合金基體11表面進行電 漿清洗，清洗時間為3〜1 〇 in i η。 [0018] 在對鎂或鎂合金基體11進行電漿清洗後，於該鎂或鎂合 金基體11上形成防腐蝕層13。所述防腐蝕層13為鎂層。 形成該防腐蝕層13的具體操作及工藝參數如下：以氬氣 為工作氣體，調節氬氣流量為100〜200sccm，設置佔空 比為30%〜80%，於鎂或鎂合金基體11上施加-i〇〇~-200V 的偏壓，並加熱鍍膜室至100~150°C (即濺射溫度為 100~150°C );選擇Mg為靶材，設置其功率為8〜13kw， 099137090 表單編號A0101 第5頁/共10頁 〇9出 201217164 沉積防腐蝕層1 3。沉積該防腐蝕層1 3的時間為30〜6Om i η ο [0019] 形成所述防腐蝕層13後，於該防腐蝕層13上形成色彩層 15，形成該色彩層15的具體操作及工藝參數如下：關閉 所述Mg靶的電源，開啟已置於所述鍍膜機内的一靶材電 源，該靶材可為鈦靶或鉻靶，設置其功率為8~10kw，保 持上述氬氣的流量不變，並向鍍膜室内通入流量為 20〜150sccm的反應氣體氮氣，沉積色彩層15。沉積該色 彩層15的時間為20〜30min，該色彩層15為Ti-N膜層或 Cr-N膜層。 [0020] 本發明較佳實施方式的殼體10的製造方法，籍由磁控濺 射法依次於鎂或鎂合金基體11上形成鎂的防腐蝕層13及 色彩層15。當殼體10處於腐蝕性介質中時，由於所述殼 體10的鎂或鎂合金基體11之上形成有防腐蝕層13，降低 了鎂或鎂合金基體11與所鍍膜層之間的膜-基電位差，從 而減緩了殼體10的腐蝕速率，提高了殼體10的耐腐蝕性 。所述殼體10耐腐蝕性提高的同時，還可避免所述色彩 層15發生異色、脫落等失效現象，從而使該殼體10經長 時間使用後仍具有較好的裝飾性外觀。 【圖式簡單說明】 [0021] 圖1為本發明較佳實施方式殼體的剖視示意圖。 【主要元件符號說明】 [0022] 殼體：10 [0023] 鎂或鎂合金基體：11 099137090 表單編號A0101 第6頁/共10頁 0992064698-0 201217164 [0024] 防腐蝕層 [0025] 色彩層： ：13 15201217164 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a casing and a method of manufacturing the same. [Prior Art] [0002] Vacuum coating technology (PVD) is a kind of environmentally friendly film forming technology. The film formed by the method of 〇 [0003] hollow coating has the advantages of high hardness, high wear resistance, good chemical stability, firm bonding with the substrate and a beautiful metallic appearance, so the vacuum coating is in magnesium and magnesium. The application of surface treatment of metal substrates such as alloys and stainless steels is becoming more and more widespread. . . . ' , :;· ;: However 'Because the standard electrode of magnesium or magnesium alloy is also low, and PVD decorative coating itself will inevitably have tiny gaps, such as pinholes, cracks' and Magnesium and magnesium alloy substrates undergo micro-electrical corrosion, forming a large membrane-base potential difference, which accelerates the rate of decay of the microbattery. Therefore, plating directly on the surface of the magnesium or magnesium alloy substrate such as TiN layer, TiN layer, A pVD decorative honey layer having a color such as a CrN layer cannot effectively prevent mold chemical corrosion of the magnesium or magnesium alloy substrate, and the PVD decorative coating itself may also have a phenomenon of heterochromaticity and political fall. SUMMARY OF THE INVENTION In view of the above, a housing having a good corrosion resistance and an agricultural appearance is provided. Further, a method of manufacturing the above casing is also provided. [0006] A housing comprising a magnesium or magnesium alloy substrate, an anti-corrosion layer formed on a surface of a magnesium or magnesium alloy substrate, and a color layer formed on a surface of the anti-corrosion layer, the anti-corrosion layer being a layer ^ 099137090 Form No. A0101 Page 3 of 10 0992064698-0 201217164 [0007] A method of manufacturing a casing, comprising the steps of: [0008] providing a magnesium or magnesium alloy substrate; magnetron sputtering on the magnesium or magnesium alloy substrate An anti-corrosion layer is formed, the anti-corrosion layer is a Mg layer; and a color layer is formed by magnetron sputtering on the anti-corrosion layer. [0009] The method for manufacturing the casing, wherein an anticorrosive layer of magnesium and a decorative color layer are sequentially formed on the magnesium or magnesium alloy substrate by magnetron sputtering. When the shell is in a corrosive medium, since the anti-corrosion layer and the magnesium or magnesium alloy matrix effectively reduce the membrane-base potential difference, it is difficult for the shell to form a cathode and an anode required for electrochemical corrosion, thereby improving the shell. Corrosion resistance of the body. When the corrosion resistance of the casing is improved, the color layer may be prevented from being colored, peeled off, etc., so that the casing has a good decorative appearance after being used for a long time. [0010] Referring to FIG. 1, a housing 10 according to a preferred embodiment of the present invention includes a magnesium or magnesium alloy substrate 11, an anti-corrosion layer 13 and a color layer sequentially formed on the magnesium or magnesium alloy substrate 11. 15. The casing 10 may be a casing of a 3C electronic product, or may be a component of a vehicle such as an industrial, a building, or an automobile. [0011] The anti-corrosion layer 13 is a Mg layer having a thickness of 1.0 to 3.0/zm. [0012] The color layer 15 is a Ti-N layer having a thickness of 1.0 to 3.0 #m. [0013] It will be appreciated that the color layer 15 may also be a Cr-N or other decorative color layer. [0014] The anti-corrosion layer 13 and the color layer 15 are all deposited by magnetron sputtering to form 099137090. Form No. A0101 Page 4 / 10 pages 0992064698-0 201217164 [0015] A preferred embodiment of the present invention The method of manufacturing the casing ι includes mainly the following steps: [0016] A magnesium or magnesium alloy substrate 11 is provided, and the magnesium or magnesium alloy substrate n is sequentially ground and electrolytically polished. After electropolishing, the surface of the magnesium or magnesium alloy substrate was wiped with deionized water and absolute ethanol in that order. Further, the wiped magnesium or magnesium alloy substrate 11 is placed in an ultrasonic cleaner containing an acetone solution for vibration cleaning to remove impurities and oil stains on the surface of the magnesium or magnesium alloy substrate n. After cleaning, blow dry and set aside. [0017] The surface of the magnesium or magnesium alloy base 11 after the above treatment is subjected to argon plasma cleaning to further remove the oil stain on the surface of the magnesium or magnesium alloy substrate to improve the surface of the magnesium or magnesium alloy substrate 11 and thereafter. The combination of the coating. The specific operation and process parameters of the plasma cleaning may be: placing the town or the latent alloy substrate 11 into a coating chamber of a magnetron sputtering coating machine (not shown), and vacuuming the coating chamber to a vacuum degree of 1. 〇xl〇_3pa, argon gas with a purity of 99·999% is fed into the coating chamber at a flow rate of 250 to 500 sccm (standard state cc/min), and applied to the magnesium or magnesium alloy substrate 11 plus 300 — 800V bias, plasma cleaning of the surface of magnesium or magnesium alloy substrate 11, cleaning time is 3~1 〇in i η. [0018] After the magnesium or magnesium alloy substrate 11 is subjected to plasma cleaning, an anticorrosive layer 13 is formed on the magnesium or magnesium alloy substrate 11. The anti-corrosion layer 13 is a magnesium layer. The specific operation and process parameters for forming the anti-corrosion layer 13 are as follows: argon gas is used as the working gas, the argon gas flow rate is adjusted to 100 to 200 sccm, the duty ratio is set to 30% to 80%, and the magnesium or magnesium alloy substrate 11 is applied. -i〇〇~-200V bias, and heat the coating chamber to 100~150°C (ie, the sputtering temperature is 100~150°C); select Mg as the target, set its power to 8~13kw, 099137090 form No. A0101 Page 5 of 10 〇9 out 201217164 Deposited anti-corrosion layer 1 3. The time for depositing the anti-corrosion layer 13 is 30~6Om i η ο [0019] After the anti-corrosion layer 13 is formed, the color layer 15 is formed on the anti-corrosion layer 13, and the specific operation and process of forming the color layer 15 The parameters are as follows: the power of the Mg target is turned off, and a target power source that has been placed in the coating machine is turned on. The target may be a titanium target or a chromium target, and the power is set to be 8 to 10 kW, and the flow rate of the argon gas is maintained. The color layer 15 was deposited by introducing a reaction gas nitrogen gas having a flow rate of 20 to 150 sccm into the coating chamber. The color layer 15 is deposited for a period of 20 to 30 minutes, and the color layer 15 is a Ti-N film layer or a Cr-N film layer. In the method of manufacturing the casing 10 of the preferred embodiment of the present invention, the anticorrosive layer 13 and the color layer 15 of magnesium are sequentially formed on the magnesium or magnesium alloy substrate 11 by a magnetron sputtering method. When the casing 10 is in a corrosive medium, since the anti-corrosion layer 13 is formed on the magnesium or magnesium alloy substrate 11 of the casing 10, the film between the magnesium or magnesium alloy substrate 11 and the plated layer is lowered - The base potential difference, thereby slowing down the corrosion rate of the casing 10, improves the corrosion resistance of the casing 10. While the corrosion resistance of the casing 10 is improved, the color layer 15 can be prevented from being in a state of discoloration, falling off, etc., so that the casing 10 has a good decorative appearance after being used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS [0021] FIG. 1 is a cross-sectional view of a housing in accordance with a preferred embodiment of the present invention. [Main Component Symbol Description] [0022] Housing: 10 [0023] Magnesium or Magnesium Alloy Substrate: 11 099137090 Form No. A0101 Page 6 / Total 10 Page 0992064698-0 201217164 [0024] Anti-corrosion layer [0025] Color layer: :13 15
099137090 表單編號A0101 第7頁/共10頁 0992064698-0099137090 Form No. A0101 Page 7 of 10 0992064698-0