JP2017031439A - セラミックス材料、その製法及び半導体製造装置用部材 - Google Patents
セラミックス材料、その製法及び半導体製造装置用部材 Download PDFInfo
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- JP2017031439A JP2017031439A JP2015149314A JP2015149314A JP2017031439A JP 2017031439 A JP2017031439 A JP 2017031439A JP 2015149314 A JP2015149314 A JP 2015149314A JP 2015149314 A JP2015149314 A JP 2015149314A JP 2017031439 A JP2017031439 A JP 2017031439A
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- 229910010293 ceramic material Inorganic materials 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000004065 semiconductor Substances 0.000 title claims description 14
- 239000002994 raw material Substances 0.000 claims abstract description 58
- 239000007921 spray Substances 0.000 claims abstract description 22
- 239000013078 crystal Substances 0.000 claims abstract description 21
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 8
- 238000007751 thermal spraying Methods 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 25
- 229910052691 Erbium Inorganic materials 0.000 claims description 6
- 229910052727 yttrium Inorganic materials 0.000 claims description 6
- 238000000921 elemental analysis Methods 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 24
- 230000007797 corrosion Effects 0.000 abstract description 24
- 229910052702 rhenium Inorganic materials 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 description 12
- 239000000758 substrate Substances 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 7
- 238000010304 firing Methods 0.000 description 7
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 6
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000005530 etching Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 4
- 229910052769 Ytterbium Inorganic materials 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 3
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 2
- 238000007088 Archimedes method Methods 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004453 electron probe microanalysis Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 2
- 239000010977 jade Substances 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000012769 bulk production Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
Classifications
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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- C04B35/6261—Milling
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- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/30—Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6
- C01F17/32—Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6 oxide or hydroxide being the only anion, e.g. NaCeO2 or MgxCayEuO
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- C04B35/26—Shaped 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 ferrites
- C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
- C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
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- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C23C4/11—Oxides
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3065—Plasma etching; Reactive-ion etching
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4803—Insulating or insulated parts, e.g. mountings, containers, diamond heatsinks
- H01L21/4807—Ceramic parts
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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Abstract
【解決手段】本発明のセラミックス材料は、第2族元素Mと希土類元素Reとの複合酸化物の結晶相を含み、第2族元素MはSr、Ca又はBaであり、XRDチャートにおいてMRe2O4の(040)面のピークと(320)面のピークとの間に第1の新規ピークが観察されるものである。こうしたセラミックス材料は、例えば、溶射用原料としてMRe2O4を用意し、該溶射用原料を所定の対象物に溶射することにより製造することができる。
【選択図】なし
Description
(溶射用原料の作製)
SrCO3原料、Y2O3原料、Er2O3原料、Yb2O3原料を表1に示す質量%となるように秤量し、粉末合計量と水とを表1に示す質量%となるように調合した。ここへ更に、粉末合計量に対し0.5質量%の分散剤を加えた。直径20mmの鉄芯入ナイロンボールを入れたナイロン製のポットを用いて、これらを湿式混合した。混合したスラリーを、スプレードライヤーを用いて噴霧し、顆粒を作製した。このような顆粒を「SD顆粒」と称する。その後、大気雰囲気下、1400℃で熱処理した。得られた熱処理粉末を目開き75μmの篩で振動篩を行い、篩下に得られた原料を溶射用原料とした。
1)XRD測定
X線回折装置により各溶射用原料の結晶相を同定した。測定条件はCuKα、40kV、40mA、2θ=10−70°とし、封入管式X線回折装置(ブルカー・エイエックスエス製 D8 ADVANCE)を使用した。
2)粒度分布
得られた溶射用原料の粉末について粒度分布を求めた。測定は日機装製MicrotracMT3300EX IIで行い、累積粒径で10%(D10)と90%(D90)を求めた。その結果を表1に示す。
3)成分分析
得られた溶射用原料の化学分析を行った。溶射用原料を溶解させたあと、Srを誘導結合プラズマ原子発光分析法にて、Y、Er、Ybをキレート滴定法にて分析した。全体を100%とし、そこからSr及び希土類元素Reの質量%を引いた値をOの質量%とした。また、希土類元素Reに対するSrのモル比Sr/Re、希土類元素Reに対するOのモル比O/Reを表1に示す。
実験例1〜3の溶射用原料のXRD測定結果を図1〜3に示す。図1〜3から、結晶相はそれぞれICDD No.032−1272,046−0132,046−0148に相当し、SrY2O4、SrEr2O4、SrYb2O4の単相からなることがわかった。このことは、成分分析の結果からも支持された。すなわち、Srと各希土類元素Reとのモル比Sr/ReはXRDで同定されたSrY2O4、SrEr2O4、SrYb2O4のようにモル比Sr/Reが約0.5となっていた。また、各種希土類元素ReとOとのモル比O/Reが約2となっていた。
(溶射膜の作製)
溶射用基板として算術平均粗さRa>1μmのアルミニウム基板を用意した。実験例1〜3で得られた溶射用原料を大気雰囲気で表2に示す条件にて溶射用基板にプラズマ溶射を実施した。実験例1−1,1−2では実験例1の溶射用原料を用い、実験例2−1では実験例2の溶射用原料を用い、実験例3−1,3−2では実験例3の溶射用原料を用いた。つまり、実験例N(Nは整数)の溶射用原料を用いて作製した溶射膜を実験例N−M(Mは整数)と表記した。
溶射用原料と同一のバルクの耐食性を評価するため、バルク体を作製した(実験例4,5)。原料は溶射用原料と同じ原料を用い、表1の実験例1,2に示す質量%となるように秤量し、イソプロピルアルコールを溶媒とし、直径20mmの鉄芯入ナイロンボールを入れたナイロン製のポットを用いて、これらを4時間湿式混合した。混合後、スラリーを取り出し、窒素気流中110℃で乾燥した。その後、30メッシュの篩に通し、混合粉末とした。成形工程では、混合粉末を100kgf/cm2の圧力で一軸加圧成形し、直径50mm、厚さ10mm程度の円盤状成形体を作製し、焼成用黒鉛モールドに収納した。焼成工程では、円盤状成形体をホットプレス焼成することによりバルク体を得た。ホットプレス焼成では、プレス圧力を200kgf/cm2とし、最高温度(焼成温度)1600℃で焼成し、焼成終了までAr雰囲気とした。焼成温度での保持時間は4時間とした。
1)XRD測定
得られた溶射膜を基板より剥がし、乳鉢にて粉砕して粉末状とした。バルク体も同様に粉末状とした。測定条件はCuKα、40kV、40mA、2θ=10−70°とし、封入管式X線回折装置(ブルカー・エイエックスエス製 D8 ADVANCE)を使用した。測定のステップ幅は0.02°とした。各溶射膜の結晶相の組成、第1の新規ピークの強度(A)、MRe2O4の(320)面のピーク強度(B)を表2に示す。
2)成分分析
得られた溶射膜を基板より剥がし、乳鉢にて粉末にした。その粉末を溶解させたあと、Srを誘導結合プラズマ原子発光分析法にて、Y、Er、Ybをキレート滴定法にて分析した。全体を100%とし、そこからSr及び希土類元素Reの質量%を引いた値をOの質量%とした。また、希土類元素Reに対するSrのモル比Sr/Re、希土類元素Reに対するOのモル比O/Reを表2に示す。
3)気孔率
溶射膜を樹脂(エポキシ樹脂)に包埋することにより溶射膜の気孔を樹脂で埋めた後、溶射膜の断面を切り出して研磨し、その後SEM(走査型電子顕微鏡)にて溶射膜断面のSEM画像を取得した。SEM画像は、倍率500倍、712×532ピクセルの画像とした。得られた画像は、画像解析ソフト(Media Cybernetics社製 Image−Pro Plus 7.0J)を用いて、まず16ビットグレイスケールに変換した後(乗算でスケーリング)、2値化処理を行い、膜の気孔率を算出した。2値化する際のしきい値は、判別分析法として大津の2値化を用いて設定した。また、バルク体については純水を媒体としたアルキメデス法により気孔率を測定した。結果を表2に示す。
4)構成元素
実験例1−1、2−1、3−1の溶射膜断面を真空脱泡しながらエポキシ樹脂中に埋めこみエポキシ樹脂を固化させた後に鏡面研磨を行い、EPMAを用いて構成元素の検出及び同定を行った。
5)耐食性試験
得られた溶射膜の表面を鏡面研磨し、一部マスクをしてICPプラズマ耐食試験装置を用いて下記条件の耐食試験を行った。段差計により測定したマスク面と暴露面との段差を試験時間で割ることにより各材料のエッチングレートを算出した。結果を表2に示す。
ICP:800W、バイアス:300W、導入ガス:Cl2/Ar=300/140sccm 0.06Torr、暴露時間:5h、試料温度:室温
1)XRD測定
・溶射膜
実験例1〜3の各溶射用原料を用いた溶射膜の代表例として、実験例1−1、実験例2−1、実験例3−1の溶射膜を取り上げ、それらのXRDチャートを図4〜図12に示した。図4〜図6は実験例1−1のXRDチャート、図7〜図9は実験例2−1のXRDチャート、図10〜図12は実験例3−1のXRDチャートである。
バルク体のXRD測定結果として、実験例4の結果を図13に、実験例5の結果を図14に示す。図13、14より、結晶相は実験例4ではSrY2O4、実験例5ではSrEr2O4単相からなることがわかった。
実験例1−1,1−2,2−1,3−1,3−2の溶射膜の成分分析の結果を表2に示す。溶射膜のモル比Sr/Reは溶射用原料のモル比Sr/Re(0.48〜0.50)よりも小さくなっていることがわかった。また、溶射膜のモル比O/Reも溶射用原料のモル比O/Re(2.1〜2.2)以下になっていることがわかった。以上のことから、実験例1−1,1−2,2−1,3−1,3−2では、溶射用原料が溶射環境下で超高温に晒されて溶射用原料中の一部のReやOが揮発し、かつ溶かされた高温の溶射用原料が急冷されて熱力学的に非平衡な状態を経由することにより、MRe2O4とは異なる結晶相が生成したと推測された。
溶射膜及びバルク体の気孔率を表2に示す。実験例1−1,1−2,2−1,3−1,3−2の溶射膜の気孔率は4〜5%であった。一方、実験例4、5のバルク体の気孔率は1%より小さかった。
実験例1−1、2−1、3−1のEPMA測定をしたところ、Sr、Re、Oが主たる構成元素であることがわかった。Sr、Re、Oにてマッピングをしたところ、構成濃度を示すマッピングの濃淡がSr、Re、Oで異なる相が複数存在していることが示唆された。また、実験例1−1,2−1の溶射膜は溶射用原料であるSrRe2O4(Re=Y又はEr)を含む複数の相から構成されていることが示唆され、この点からも本溶射膜にて新しい結晶相が生成していることが示唆された。実験例3−1の溶射膜は、溶射用原料であるSrYb2O4の存在は認められなかったが、新しい結晶相が生成していることが示唆された。
表2に実験例1−1,1−2,2−1,3−1,3−2及び実験例4、5のエッチングレートの結果を示す。表2には記載していないが、イットリア溶射膜のエッチングレートが0.16μm/hであった。実験例1−1,1−2の溶射膜は、実験例4のSrY2O4のバルク体と比べてCl系プラズマに対する耐食性が高く、実験例2−1の溶射膜は、実験例5のSrEr2O4のバルク体と比べてCl系プラズマに対する耐食性が高いことがわかった。
Claims (10)
- 第2族元素Mと希土類元素Reとの複合酸化物の結晶相を含むセラミックス材料であって、
前記第2族元素MはSr、Ca又はBaであり、
前記セラミックス材料のXRDチャートにおいてMRe2O4の(040)面のピークと(320)面のピークとの間に第1の新規ピークが観察される、
セラミックス材料。 - 前記セラミックス材料のXRDチャートにおいてMRe2O4の(410)面のピークと(311)面のピークと間に第2の新規ピークが観察される、
請求項1に記載のセラミックス材料。 - 前記セラミックス材料は、MRe2O4の結晶相を含む、
請求項1又は2に記載のセラミックス材料。 - 前記第2族元素MはSrであり、前記希土類元素ReはY、Er又はYbである、
請求項1〜3のいずれか1項に記載のセラミックス材料。 - 前記第1の新規ピークの強度(A)とMRe2O4の(320)面のピークの強度(B)の比(A)/(B)が0.8よりも大きい、
請求項1〜4のいずれか1項に記載のセラミックス材料。 - 前記セラミックス材料の全体の元素分析結果に基づくモル比M/Reが0.48未満である、
請求項1〜5のいずれか1項に記載のセラミックス材料。 - 前記セラミックス材料の全体の元素分析結果に基づくモル比O/Reが2.1以下である、
請求項1〜6のいずれか1項に記載のセラミックス材料。 - 前記セラミックス材料の気孔率は5%以下である、
請求項1〜7に記載のセラミックス材料。 - 請求項1〜8のいずれか1項に記載のセラミックス材料で表面が覆われた、
半導体製造装置用部材。 - 請求項1〜8のいずれか1項に記載のセラミックス材料を製造する方法であって、
溶射用原料として、MRe2O4を含む材料を用意するか、溶射フレーム中で反応してMRe2O4が生成する材料を用意し、該溶射用原料を所定の対象物に溶射することにより前記セラミックス材料を製造する、
セラミックス材料の製法。
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KR101155688B1 (ko) * | 2005-04-11 | 2012-06-12 | 니뽄 도쿠슈 도교 가부시키가이샤 | 도전성 산화물 소결체, 도전성 산화물 소결체를 이용한서미스터 소자, 및 서미스터 소자를 이용한 온도 센서 |
WO2011122376A1 (ja) | 2010-03-30 | 2011-10-06 | 日本碍子株式会社 | 半導体製造装置用耐食性部材及びその製法 |
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JP2004190136A (ja) * | 2002-11-28 | 2004-07-08 | Tokyo Electron Ltd | プラズマ処理容器内部材 |
JP2005154885A (ja) * | 2003-03-26 | 2005-06-16 | Mitsubishi Heavy Ind Ltd | 遮熱コーティング材料 |
JP2005248207A (ja) * | 2004-03-01 | 2005-09-15 | Mitsubishi Heavy Ind Ltd | 金属酸化物膜およびその製造方法 |
JP2012512330A (ja) * | 2008-12-15 | 2012-05-31 | アルストム テクノロジー リミテッド | 熱バリア被覆系、それらで被覆された部品、および熱バリア被覆系の部品への適用方法 |
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