TW202019621A - 藉金屬玻璃粒子轟擊於基材上同時珠擊並形成薄膜之動能撞擊方法 - Google Patents

藉金屬玻璃粒子轟擊於基材上同時珠擊並形成薄膜之動能撞擊方法 Download PDF

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TW202019621A
TW202019621A TW108128096A TW108128096A TW202019621A TW 202019621 A TW202019621 A TW 202019621A TW 108128096 A TW108128096 A TW 108128096A TW 108128096 A TW108128096 A TW 108128096A TW 202019621 A TW202019621 A TW 202019621A
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metallic glass
glass particles
particles
pressure
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陳冠維
鄭憲清
魏伯任
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態金材料科技股份有限公司
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Abstract

一種藉金屬玻璃粒子轟擊於基材上同時珠擊並形成薄膜之動能撞 擊方法，係包括下列步驟：A.製備金屬玻璃粒子或液態合金粒子；以及B.令該金屬玻璃粒子或液態合金粒子轟擊於一基材表面以硬化該基材表面並於該基材表面上形成一金屬玻璃或液態合金薄膜以保護該基材之表面而增加其抗腐蝕特性者。

Description

藉金屬玻璃粒子轟擊於基材上同時珠擊並形成薄膜之動能撞擊方法
本發明係關於一種藉金屬玻璃粒子轟擊於基材上同時珠擊並形成薄膜之動能撞擊方法者。
Inoue等氏之美國專利US 8,323,729揭示一製程以產製一金屬構件，係包括：先以壓縮空氣將粒子珠擊(shot peening)於一包括鋁合金之金屬材料表面以賦予該金屬構件之抗疲乏特性；再進行化學轉化處理，於該珠擊後之金屬材料表面形成一薄膜以賦予該金屬構件之抗腐蝕特性。
為同時賦予該金屬材料之抗疲乏特性及抗腐蝕特性，必須進行兩步驟，即金屬材料表面先予珠擊，然後進行化學轉化處理於珠擊後之表面形成一保護薄膜。
如此一來，遂增加了金屬構件之製作成本。
本案發明人有鑒於此，乃加研究創新，揭示出本發明新穎之藉金屬玻璃粒子轟擊於基材上同時珠擊並形成薄膜之動能撞擊方法者。
本發明之目的旨在提供一種方法，藉金屬玻璃粒子轟擊於基材上同時珠擊並形成薄膜之動能撞擊方法，由是同時增加材料表面之硬度，提升其抗疲乏特性，增進其抗破裂韌性(Anti-fracture toughness)，以及 增進其抗腐蝕特性。
本發明之可取實體可由以下說明書，配合所附諸圖式而得以明晰之。
1‧‧‧金屬玻璃粒子
11‧‧‧噴嘴或噴槍
10‧‧‧金屬玻璃薄膜
2‧‧‧基材
21‧‧‧硬化區
圖1係本發明方法之動能撞擊示意圖。
圖2係依本發明方法於基材進行表面處理後之斷面示意圖。
依本發明須提供金屬玻璃或液態合金之粒子(particles)，俾於一基材(最好是一工件或工程結構物之金屬基材或合金基材)上進行珠擊(shot peening)，且於該基材表面上形成一薄膜。
本發明方法包括下列步驟：
1.製備金屬玻璃粒子：
製備一金屬玻璃或液態合金之原枓，其中形成該金屬玻璃之元素之原子百分比須予調整到一適當之百分比。將該金屬玻璃原料放入一真空熔爐中加以熔融，然後使用超音速氣體或高速流體迅速加以冷卻並霧化以產生金屬玻璃粒子。將所得金屬玻璃粒子收集、分類為數等級，例如：5~10微米，10~20微米，20~50微米，50~100微米及100~300微米等等。粒子之粒徑愈小，該基材所受珠擊之表面將更呈細微，與緻密。
2.以金屬玻璃粒子轟擊(bombardment)於基材上：
如圖1所示，將金屬玻璃粒子1轟擊於基材2之表面。金屬玻璃粒子係於一驅動氣體之壓力下藉一噴嘴或噴槍11射出，以其動能轟擊於 基材表面，使基材表面硬化並使基材之凹凸或粗糙表面圓潤化(smoothen)。實質上，係如圖2所示，該基材2之上表面被轟擊後形成一硬化區21，於金屬玻璃粒子1持續對該基材表面轟擊之情況下，上述之凹凸、粗糙表面續被轟擊而下之金屬玻璃粒子1所圓潤化，終於使該硬化區21之表面形成一金屬玻璃薄膜10。如此一來，由於該硬化區21之形成可增進基材之硬度、抗疲乏特性、抗破裂韌性，而於表面再形成金屬玻璃薄膜10後，如虎添翼，更增進該基材之抗腐蝕特性。本發明能同時增進基材之硬度及抗腐蝕特性，實優異於前述美國專利US 8,323,729之先前技術。
上述以金屬玻璃粒子轟擊基材乙步驟實際上可再加以分成兩個「次步驟」，即：
A.高壓轟擊：
金屬玻璃粒子轟擊基材表面係於壓力為5~15巴(bar)之高壓氣體之驅動下，以每秒至少10米之速度來進行該轟擊作業，由是產生硬化但稍呈粗糙之基材表面。
B.低壓轟擊：
繼續對基材表面進行金屬玻璃粒子之轟擊，唯此時壓力調至0.1~5bar之低壓，經此低壓轟擊後會產生圓潤光亮之基材表面有如拋光之基材表面。
經過此等轟擊，該基材之表面除增加硬度外並快速覆置一薄金屬玻璃膜，賦予基材表面之抗腐蝕特性及圓順之抛光外表。本發明能同時增加基材表面硬度及抗腐蝕特性，並顯現亮麗之抛光外表而優異於先前 技術。例如，以金屬玻璃粒子轟擊6061鋁合金之基材，可使其表面奈米硬度增至23.41GPa(2212Hv)，此與未經金屬玻璃粒子轟擊之前述鋁材相較，未處理鋁材之硬度僅為1.13GPa(107Hv)，可見本發明就表面硬度而言顯然大幅提升而優異於先前技術。而將金屬玻璃粒子轟擊於高速鋼模表面後，可將其表面奈米硬度由7.06GPa(667Hv)增至22.03GPa(2082Hv)。而上述經轟擊且形成薄膜表面之基材經置於空氣中三週後仍未見鏽蝕之現象(表面不形成氧化物層)。
本發明優異於先前技術之傳統珠擊法，而具有以下諸優點：
1.金屬玻璃粒子可製作成真圓之形狀，故於基材表面轟擊時會產生滑潤之抛光表面。
2.金屬玻璃粒子具有高抗破裂強度，不易破裂而傷及加工物表面，且粒子可回收再用，降低製造成本，又富環保意義。
3.金屬玻璃粒子有極高之硬度與密度，當其轟擊基材時會增加其撞擊之效果，故大增基材被撞擊表面之硬度。
4.當金屬玻璃粒子高速撞擊基材時(如每秒10米或以上之速度)會因摩擦生熱，當溫度高於其玻璃轉化溫度(glass transition temperature,Tg)時，部份金屬玻璃粒子因而熔融，而形成一薄膜黏附於基材表面，隨即迅速冷卻至室溫而保持其非晶質(amorphous)特性。由於此一金屬玻璃薄膜形成於基材表面，使工件或結構物之基材表面具有良好之抗腐蝕特性。故一舉兩得，藉本發明方法不僅增加基材表面之硬度，且提升其抗腐蝕特性，不必額外再進行表面防蝕處理之加工程序，而大降製造成本。
由於本發明之方法，當金屬玻璃粒子轟擊或撞擊於基材表面時，不僅增加基材表面之硬度，同時也因在基材表面形成一金屬玻璃之薄膜而能保護基材表面，而可增進其防蝕效果，使整個基材增加硬度，又增加抗疲乏特性以及抗破裂韌性(anti-fracture toughness)。
本發明可於不違本發明之精神及範疇下，作適當之修飾或改變。本發明方法還包括藉由此一方法所製成之產品。
10‧‧‧金屬玻璃薄膜
2‧‧‧基材
21‧‧‧硬化區

Claims (5)

  1. 一種藉金屬玻璃粒子轟擊於基材上同時珠擊並形成薄膜之動能撞擊方法，係包括下列步驟：C.製備金屬玻璃粒子或液態合金粒子；以及D.令該金屬玻璃粒子或液態合金粒子轟擊於一基材表面以硬化該基材表面並於該基材表面上形成一金屬玻璃或液態合金薄膜以保護該基材之表面而增加其抗腐蝕特性者。
  2. 如申請專利範圍第1項之方法，其中該金屬玻璃粒子係於一真空熔爐中令一金屬玻璃材料熔融，然後迅速冷卻、霧化以形成金屬玻璃粒子。
  3. 如申請專利範圍第1項之方法，其中將金屬玻璃粒子轟擊於該基材之擊係包括：(1)高壓轟擊：於壓力為5~15巴(bar)之高壓氣體之驅動下，將金屬玻璃粒子轟擊於該基材表面以硬化該基材表面；以及(2)低壓轟擊：於壓力0.1~5bar之低壓氣體之驅動下，以金屬玻璃粒子繼續轟擊該基材表面，使該基材表面形成圓潤光亮且防鏽蝕之表面者。
  4. 如申請專利範圍第1項之方法，其中自該真空熔爐所製得之金屬玻璃粒子係加以收集、分成多數粒徑等級，以供選用者。
  5. 一種產品，係依申請專利範圍第1項所述之方法加以製備者。
TW108128096A 2018-08-23 2019-08-07 藉金屬玻璃粒子轟擊於基材上同時珠擊並形成薄膜之動能撞擊方法及其產品 TWI801646B (zh)

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US16/111,176 2018-08-23
US16/111,176 US10883152B2 (en) 2018-08-23 2018-08-23 Dynamically impacting method for simultaneously peening and film-forming on substrate as bombarded by metallic glass particles

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