TWI314546B - - Google Patents

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TWI314546B
TWI314546B TW094115621A TW94115621A TWI314546B TW I314546 B TWI314546 B TW I314546B TW 094115621 A TW094115621 A TW 094115621A TW 94115621 A TW94115621 A TW 94115621A TW I314546 B TWI314546 B TW I314546B
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Taiwan
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ceramic
stage
ceramic substrate
loading surface
sintering
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TW094115621A
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English (en)
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TW200602289A (en
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Satoshi Sasaki
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Tdk Corp
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    • C04B35/49Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates
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Description

1314546 九、發明說明: 【發明所屬之技術領域】 本發明有關用於燒結陶瓷坯件形成陶瓷基板的載台 (嫌〇以及陶究基板之製造方法,以及由該製造方法製造 的陶瓷基板。 【先前技術】 作爲現有的這類技術’例如有在曰本特開2〇〇2_ι〇489ι 號公報中記述的電子部件用燒結夾具。該電子部件用燒結 夾具由在基材上形成包含99.5重量%以上的氧化錯或穩定 化氧化锆等氧化錯材料的表面層所構成。在日本特開 2〇〇2-1()4891號公報中記述有:^在上述表面層上裝載含 有陶究的電子部件並燒結,能夠防止電子部件被污染,並 月b夠製造顯示穩定特性的高品質電子部件。 然而,日本㈣·2.Η)侧號公報巾記㈣電子部件 燒結用夾具使用作爲載台,燒結陶瓷坯件形成陶瓷基板 時,有燒結後的陶竟基板中容易產线曲等變形的擔憂。 此等問題,在爲了得到薄型化的陶竟基板而 時尤爲顯著。 1干 【發明内容】 本發明鑒於上述問題,1目的 ,、目的疋耠供—種可抑制燒結後 的陶是基板中產生勉曲等變形的载台以及陶究基板的製造 方法,以及由該製造方法製造的陶究基板。 爲了達到上述目的’本發明者進行了反覆深入研究,立 …現:藉由將陶…裝载於平均粒徑爲0.3〜二 10i825.doc 1314546 、陶瓷密度爲6 kg/dm3以上、熱傳導率爲$ w/mK以 下、且裝載面的中心線平均粗糙度爲1 的載台的 裝載面上進行燒結’能夠抑制燒結後的陶瓷基板中産生翅 曲等變形,從而完成本發明。 即’本發明有關之載台係具有在燒結陶瓷坯件、形成陶 曼基板時可裝載陶瓷述件的裝載面的載台,其特徵在於: 平均粒徑爲0.3〜2.5 μιη,陶瓷密度爲6 kg/dm3以上,熱傳 導率爲5 WVmK以下,且所述裝載面的中心線平均粗糙度 爲 1 μηι〜20 。 另外,本發明有關之陶瓷基板之製造方法係燒結陶瓷坯 件形成陶瓷基板之陶瓷基板之製造方法,其特徵在於:準 備平均粒徑爲0.3〜2.5 μηι、陶瓷密度爲6 kg/dm3以上、熱 傳導率爲5 W/mK以下、且裝載面的中心線平均粗糙度爲| ㈣〜2〇 μιη的載台’將陶究柱件裝載於載台的襄載面上進
如此’ ^使構成載台的顆粒的平均粒徑爲_〜25 並使載台的陶_爲6 kg/dm3以上,則燒結時,例 如就能夠防止錯等成分從陶究柱件蒸發並向載台中擴散, 能夠使陶h件的成分在燒結過程中保持均勾。進一步, 如果使熱傳導率爲5 W/mic以下并+ ^下,並且使所述裝載面的中 心線平均粗糙度爲! μηι〜2〇 就旎夠減小陶瓷坯件的載 〇 —側的面與其相反的面 •^間因燒結而引起的熱歷程差異 小’而能夠均勻地燒結陶赘 八 』无坯件。如上所述,藉由在上述 載口的裝載面上裝載陶瓷坯 午進仃燒結’能夠抑制燒結後 101825.doc 舄了製造上述
1314546 的陶瓷基板中産生麵曲等的變形。 【實施方式】 以下參照附圖詳細說明本發明的具體實施方式。 本實施方式以鈦酸鉛以及鈦酸錯酸鉛爲主要成分製造壓 電陶免基板。此種壓電陶究基板可應用於陶究振子:陶竟 ,濾器、Μ電蜂鳴器、壓電感測器、壓電調節器等各種製 品 ° 、 '土书旧瓦签极-吗丄久固ζ所示,首先, 準備裝載薄片狀陶究㈣!的氧化錯載台2。該氧化錯载台 2為是孔隙度不到1%的緻密材料,該材料例如可以為在: 化錯中添加作爲穩定劑之氧化紀(γ2〇3)的材料。另外,作 =定:,除了氧化卿3)之外,亦可使用氧化舞 a )氧化鎂(Mg〇)、氧化鈽(Ce〇2)等。而且 Μ的添加1,在貫現穩定化的基礎上較佳爲“Μ 更佳爲8~12 mol %。 1準:好氧化鍅载台2之後’按照以下順序製作陶究远件 究粉體中,:以欽酸錯及鈦酸錯酸錯爲主要成分的壓電陶 ^中添加有機黏合劑及有機溶劑等 利用刮刀法m , 便其成爲膏狀’ 安开v成濤片狀,得到坏件片 上由絲網印刷牛筏者’在忒坏件片 Ρ刷法形成内部電極,形成有 片數片予以籍爲⑺ mi5電極的坏件 τ 乂積層侍到積層體坯件。而且 切斷爲規定 f °亥積層體坯件 見疋尺寸,得到陶瓷坯件1。 在製作陶瓷坯件1後,如圖1及圖2所示,將韋 件1裝載於4仆Μ 將數片陶瓷坯 、氧化錯栽台2的裝載面2a。而且, 在例如400 〇c 101825.doc 1314546 的溫度下安定]0小時 在對陶t达件1進行 -达件1的脫黏合劑。 由在氧化錯载台2的裝裁面/劑後’如圖3及圖4所示,藉 有脫黏合劑後的㈣达件::角:,片3’將裝載 進-步,將未裝戴陶…多段積層’ 端。而且,將如此積層的氧化錯載台㈣在最上 内,在例如1_。(:的溫度下安 :閉相體4 燒結,得到塵電陶究基板。 ,進仃陶以们的 著對上述氧化錯載台2更詳細加以說明。 構台2為同時滿足以下⑴〜⑷各條件的材料:⑴ 冓广的平均粒徑爲。Μ·、; ( kg/dm3以上;(3)赦偉 充在度爲6 t心線平均粗糖戶、、爲 K以下;(4)裝載面〜的 值的理由如下:^卜Μ"。限制〇)〜⑷各條件中數 陶菩其4 外,以下說明中的氧化錯載台2及麼電 =方=與後述實施一载台的製造方 (1)構成粒子平均粒徑爲0.3〜2.5 μπι的理由 圖5表示構成氧化錯載台2的顆粒平均粒徑與屢電陶究基 板的翹曲量的關係圖。此時’其他條件是陶瓷密产二 kg/W、熱傳導率爲4·5 w/mK、裝載面的中心線平又均粗 糙度爲5㈣。另外’所謂翹曲量,是指使用雷射式非接觸 三維形狀測定裝置所測定的壓電陶瓷基板的最大高低差。 從同圊中可知,平均粒徑爲〇·3〜25 4爪時,壓電陶瓷基 板的翹曲量能夠抑制在不滿3〇 μπι。這是由於當平均粒徑 101825.doc 1314546 爲 2_5 "历時,由於顆粒間的間隙變小,在燒結時能夠 防止鉛等成分從陶瓷坯件丨蒸發並向氧化錯載台2中擴散, 能夠使陶究这件1的組成在燒結中保持均勻。
相對於此’平均粒徑不滿〇 3叫時以及超過2.5㈣時, 壓電陶免基板的赵曲量增大。這是由於顆粒間的間隙變 大,在燒結時鉛等成分很容易從陶竞⑴^蒸發並向氧化 錯载台2中擴散,使陶Μ件1的組成在燒結中不均勾。而 且’由於鉛等成分從陶究坯们蒸發,會造成燒結後的壓 電陶竞基板的組成偏離所希望的值,由㈣等成分向氧化 二載口2中擴政,還有會發生與構成氧化錯載台2的成分進 订反應使氧化結載台2惡化等的不良現象。 (2)陶瓷密度爲6 kg/dm3以上的理由 曰二表示氧化錯載台2的陶究密度與壓電陶竟基板的翹曲 =關係圖。此時其他條件爲平均粒徑〗·…、熱 爲PM、裝载面2压的中心線平均粗縫度爲5^ ‘ 量在不滿30…/由二心以上時’可抑制勉曲 B# . A 疋由於备陶瓷密度爲6 kg/dm3以上 吟’在燒結時能夠防卜 ^ ^ ^ a 〇 ^ ,口荨成刀從陶瓷坯件1蒸發並向氧 釔载σ 2中擴散,能夠使陶 保持均勻。 件1的組成在燒結過程中 相對於此,陶究密度不到6, 麵曲量增大。這是由於顆 :麦基板的 成分容易從陶究运们蒸發並向大’在燒結時錯等 瓷坯件丨的έ且虚, ......化錯載台2中擴散,使陶 成在燒結中變得不均勾。而且,存在發生與 101825.doc 1314546 • 上述平均粒徑的情況相同的不良現象的問題。 ' (3)熱傳導率爲5 W/mK以下的理由 •曰圖7表示氧化錯載台2的熱傳導率與壓電陶竟基板的翹曲 I的關係圖。此時,其他條件爲平均粒徑18 _、陶瓷密 度爲6 kg/dm3、裝載面2a的中心線平均粗龄度爲5脾。 從圖中可知’熱傳導率爲5 W/mK以下時,翹曲量可抑 制在不滿30㈣。這是由於當熱傳導率爲5 w/抓以下時, • 能夠減小陶兗_在氧化锆載台2側該面與其相反面之間 ’因燒結而引起的熱歷程差異,能夠均句地燒結陶竟趣件 1 ° 相對於此’熱傳導率超過5 W/抓時,壓電陶竟基板的 輕曲量增大。這是由於陶究述们在氧化錯載台2側該面與 其相反面之間因燒結而引起的熱歷程差異增大,使陶瓷坯 件1的燒結不均句。 (4)裝載面2a的中心線平均粗糙度μηι〜2〇 μιη的理由 ® 8表示氧化锆基板2的裝載_中心線平均粗糙度與 壓電陶竟基板的趣曲量的關係圖。此時,其他條件爲平均 ' 粒仏1.8 μιη、陶瓷德度爲ό kg/dm3、赦傳導率爲4 $ •:。此外,所謂中心線平均粗經度/是指二 業標準)B0601規定的表面粗經度,是從中心線折疊粗链 度曲線,該粗糙度曲線與中心線得到的面積除以長度的 值。 從該圖中可知,中心線平均粗糙度爲】_〜2〇㈣時,翹 曲量能夠抑制在不滿50 _。這是由於當中心線平均粗糖 101825.doc -10· 1314546 度爲1 μηι〜20 μιη時,如圖9所干,始戈ht -觸面㈣,減===: 該面與其相反面之間因燒結熱歷㈣ 勻地燒結陶瓷坯件1。 b句句 相對於此’中心線平均粗趟度不滿…時及超 時,壓電陶究基板的魏曲量增大。這是由於當中心線平^
不;時’從氧化錯載台2向陶以件1傳遞的執 里曰大’特別能夠使陶究柱们在氧化錯基板2侧 相反面之間由燒結引起的熱歷程差異減小。另-方面,、:: 中心線平均粗糙度超過20_時,陶以件】卡 ^ 台2的凸部,使陶㈣件1的收縮率不均勾。而且,中= 平獅度超過2。_時,可能發生燒結後的 2 =化結基板2側該面上轉印了氧化錯載台2的凹凸的; =上的說明可知’藉由將陶究述们裝載於平均粒徑 爲〇.3〜2.5 _、陶究密度爲6 kg/dm3以上、熱 W/mK以下、且裝載面2&的中心線平均粗縫度爲 μηι的氧化錯載合2的继# 戰口 2的裝载面2aJl,並進行燒結,可抑 結後的壓電陶竟基板上發生翹曲等變形。 接著,說明實施例及比較例的氧化錯載台的評價結果。 另外’實施例中的氧化鍅載台同時滿足 件:⑴平均粒徑η ; U ()各條 上.⑶二t (2)陶竟密度爲6kg/dm3以 粗=爲、_爲5w/mK以下;⑷裝載面的中心線平均 粗板度爲1 μπι〜20 。 101825.doc
• II 1314546 ==例及比較例的氧化_的坪價 二法製作氧化錯载台。首先,在氧化錯粉末:、下 的氧化釔(y2〇3)或氧化鈽 :、12 機勘合劑得到顆粒。使用今顆私十 進步,加入有 报 顆粒在98〜196略的愿力下出 °C的溫度下燒+ 在大氣軋氦令1400〜160〇 堯'、.口2小時。由此得到” 1〇〇mm><i〇〇mm,厚产 mm”的正方形薄板狀氧化錯載台。
的法製作的實施例1〜3及比較例1〜5的氧化錯載台 、、夕寺如表1所示。另外,可以藉由改變壓製壓力、 結溫度,將氧化鍅載台的平均粒徑及陶究密度 °、’、”規&值°另外’藉由增大成形模具表面的粗經度, 1、=氧化錯载台的裝載面轉印中心線平均粗糙度的凹 、步如果使用氧化鈽(Ce〇2)作爲添加劑,能夠減 小構成氧化錐载台的顆粒平均粒徑。 [表1]
厶口度c 載密 i§'£g/ '陶ί 乳ί 顆平徑 成的粒 構粒均 劑 加
的平度 面線糙 載心粗 裝中均 特平 的3 純一 喊fl 電曲 壓翹 度 糙
101825.doc
比較例1 比較例2
-】2· 1314546
製作氧化鍅載台之後,按照如下所述的方式製作陶竞达 件。首先’對於組成爲(Pb❶96SrG()4)(Ti() 468Zr() 532)〇3的本主 要成分1 mol中添加〇.5重量%的Sb2〇3的氧化物或碳酸鹽形 式的材料,藉由球磨進行濕式混合,將濕式混合後的村料 在9〇〇°C下進行素燒。接著,對素燒的材料再次藉由球磨 進行濕式粉碎,使其微粉化,得到壓電陶瓷粉體。在壓電 陶瓷粉體中添加有機黏合劑及有機溶劑等,使其成爲膏 狀,用刮刀法成形爲薄片狀,得到厚度5〇 0〇的坏件片。月 接:’在銀:鈀=7: 3的金屬材料中添加有機黏合劑及 機冷劑#,使其成爲膏狀,藉由絲網印刷法在坏件 :成内部電極。而且,將形成内部電極的坏件片積層8 乂進—步,在最上層積層用以形成電極端子之坏件片, 2 ’在制方向上進行加壓處料到積 積層體链件切斷成,,l5mmx35_ ”的 二將該 件。 J贡万形,侍到陶瓷坯 :作陶㈣件之後’在最初製作的 裝載10片陶究这件,在_的溫度下安定=载面上 陶竟柱件的脫黏合劑。 …疋1。小時,進行 載:二黏合劑之後,藉由在氧化錯载台裝 角配置厚度爲〇·5 mm的 劑彳—件的氧化錯载台積層!。層,進=载有脫黏合 陶是远件的氧化錯载台積層在最上層將未裝載 的氧化錯載台配置於密閉箱體内,在二將如此積層 2小時’進行陶…的燒結,從 C::度下安定 仔到壓電陶瓷基板。 101825.doc 1314546 根據以上的壓電陶瓷基板的製造方法,使用實施例u 及比較例1〜5的氧化锆載台,分別製造了 1 〇〇片壓電陶竟基 板。而且’對於實施例1〜3及比較例1〜5的氧化錯載台,分 別測定100片壓電陶瓷基板中産生的翹曲量,求得其平均 值。此外,測定該100片壓電陶瓷基板的"氧化錯載台裝載 面侧的.該面"的十點平均粗糙度,求得其平均值。1〇〇片壓 電陶瓷基板的翹曲量的平均值與十點平均粗糙度的平均值 如表1所示。
另外’"所謂十點平均粗糙度Rz",如圖10及下述式所 示,從粗糙度曲線在其平均線方向僅取出基準長度L,抽 出其中5個峰頂和谷底,將抽出部分的相對於平均線的各 峰頂的標高YP的絕對值的平均值,與抽出部分的相對於平 均線的各谷底的標高Υν的絕對值的平均值相加而得到的 值。 [式1]
如此,由於十點平均粗餘度Rz是考慮高的5個值與低的5 個值的#算方法,所以表面上有突發的凹凸時,會反映在 十點平均粗糙度Rz的值内。 從表I可知,使用同時滿足⑴平均粒徑爲〇3〜25㈣、 (2)陶究雄'度爲6 lcg/dm3以上、电播* * S 从上、(3)熱傳導率爲5 w/mK以 下、(4)裳载面的中心線平灼鈿拉 f 丁叫祖槌度爲][μιη〜2〇 μιη的 (1)〜(4)各條件的實施例1 J 旳氧化錯載台,能夠將壓電陶 101825.doc •14- 1314546 ^板的“量抑制㈣〜25_範_。相對 未同時滿足⑴〜⑷各條件的比較例卜5的氧化 = 能將屋電“基板的趣曲量抑制在不滿55_,並场= 比較例4之外,未能將麼電陶究基板的龜曲量抑制在不滿 105 μιη 0 ’
而且,使用同時滿足⑴〜⑷各條件的實施例㈠的氧化 錯載台,能夠將塵電陶竞基板的,,氧化錯載台裝载面側的 该面"的十點平均粗糙度Rz抑制在2 —以…此,例 如可以不對氧化錯載台裝載面側的該面"進行機械加工 的情況下’將塵電陶竞基板與金屬板等進行貼合。相對於 此’使用未同時滿足⑴〜⑷各條件的比較例卜5的氧化錯 載口纟lb將氧化鍅載台的裝載面側的該面"的十點平均 粗糙度RZ抑制在不足7 _,並且除了比較例4之外,未能 將壓電陶瓷基板的翹曲量抑制在不足丨丨pm。 本發月並不限於上述實施方式。例如,雖然上述實施方 式疋關於3乱的壓電陶究基板的製造,但本發明也可以適 用於除此之外的壓電陶冑基板的製S。而且,雖然上述實 施方式中陶竟达件及壓電陶竟基板為積層體之情況,但本 發明也可以適用於單板的陶_件及陶£基板。 如以上的說明,根據本發明,能夠抑制燒結後壓電陶瓷 基板中產生的翹曲等變形。 【圖式簡單說明】 圖1表示本發明有關的陶瓷基板的製造方法之一實施方 式中陶瓷坯件進行脫黏合劑時的狀態平面圖。 101825.doc •15·
1 2 2a 3 4 1314546 ® 2 I -丄 、 不本發明有關的陶瓷基板的製造方法之一實施方 ^陶瓷坯件進行脫黏合劑時的狀態側面圖。 圖3姜 - 々 、 衣不本發明有關的陶瓷基板的製造方法之一實施方 式中陶瓷坯件進行燒結時的狀態側面圖。 圓4係沿圖3的IV-ΐν線的截面圓。 5 、示構成氧化錯载台的顆粒平均粒徑與壓電陶瓷基 板的翹曲量的關係圖。 «6表不氧化錯載台的陶冑密度與麼電陶究基板的翹曲 量的關係圖。 二表示氧化錯載台的熱傳導率與壓電陶究基板的趣曲 里的關係圖0 圖8表不氧化錯載台的裝載面的中心、線平 雷陷***均粗輪度Rz的概視圖。 【主要元件符號說明】 陶瓷坯件 氧化锆載台 裝載面 間隔片 密閉箱體 101825.doc

Claims (1)

  1. 1314^461562〗號專利申請案 中文申請專利範圍替換本(98年4月) 十、申請專利範圍: :種載台,其特徵在於在燒結陶究柱件形成陶瞻時 具備襄載所述陶瓷坯件的裝載面; 陶瓷密度爲6 kg/dm3以 所述裝載面的中心線平 〆、平均粒徑爲〇.3卩爪〜2.5 pm, 上’熱傳導率爲5 w/mK以下,且 均粗键度爲1 μηι〜2〇 μηι。 2. 瓦丞板之製造方 件以形成之陶瓷基板者, 6 kg/dmt::備:均粒徑爲。·3 _〜2·5㈣、陶竟密度爲 心線平均粗導率贾抓以下、且裝載面的中 述裝載面上心的載台,在所述载台的所 扁载所述陶瓷坯件進行燒結。 101825-980428.doc
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