CN108442980B - 一种应用于发动机中的陶瓷热障涂层及其发动机 - Google Patents
一种应用于发动机中的陶瓷热障涂层及其发动机 Download PDFInfo
- Publication number
- CN108442980B CN108442980B CN201810291806.9A CN201810291806A CN108442980B CN 108442980 B CN108442980 B CN 108442980B CN 201810291806 A CN201810291806 A CN 201810291806A CN 108442980 B CN108442980 B CN 108442980B
- Authority
- CN
- China
- Prior art keywords
- engine
- ceramic
- barrier coating
- thermal barrier
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 73
- 239000012720 thermal barrier coating Substances 0.000 title claims abstract description 42
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 27
- 230000003647 oxidation Effects 0.000 claims abstract description 25
- 239000003054 catalyst Substances 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 14
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 239000011149 active material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000000567 combustion gas Substances 0.000 claims description 4
- 238000004070 electrodeposition Methods 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical group [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 239000010948 rhodium Substances 0.000 claims description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 12
- 239000012790 adhesive layer Substances 0.000 claims 2
- 239000007921 spray Substances 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 8
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 4
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/284—Selection of ceramic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/464—Rhodium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
- F01L3/04—Coated valve members or valve-seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0084—Pistons the pistons being constructed from specific materials
Abstract
本发明公开了一种应用于发动机中的陶瓷热障涂层，包括与金属基体热膨胀系数相匹配的粘结层、陶瓷层以及由于粘结层氧化形成的热生长氧化层，陶瓷层中还添加有氧化催化剂，其孔隙率大于金属粘结层的孔隙率；将本发明制得的陶瓷热障涂层应用于发动机中，陶瓷层中添加的氧化催化剂可利用过量的碳氢化合物和一氧化碳，并使碳氢化合物在转化为积碳之前，将其氧化，减少冷启动期间的燃料加浓，降低碳氢化合物和一氧化碳排放量，并可防止因积碳引起早燃现象的发生。
Description
技术领域
本发明属于金属涂层技术领域，具体涉及一种应用于发动机中的陶瓷热障涂层及其发动机。
背景技术
为了提高航空发动机或燃气轮机的效率和降低碳排放，其进口温度要求越来越高，然而过高的温度给热机金属部件带来更严苛的使用环境，普通的单晶或高温合金已经达到使用极限，很难满足要求。为解决此问题，近年来，热障涂层技术得到了广泛应用。陶瓷热障涂层具有隔热、耐磨损、耐腐蚀和抗氧化等功能，在航天、航空和能源领域应用广泛，特别是在航空发动机的高压涡轮叶片、燃烧室及冷却流道，以及在工业燃气轮机热端部件中防护作用明显，显著提高热机效率和循环寿命。另外，热障涂层技术可减少传热损失并能提高气缸中的压缩温度，可使得一些具有低十六烷值但高自燃温度和高汽化潜热的燃料，如汽油，乙醇或甲醇，能够取代柴油，成为压燃式发动机的主要燃料，实现压缩点火提高热效率以及降低碳烟排放。
然而，在发动机冷启动期间，汽缸中加浓的燃烧通常需在排放认证循环开始用来预热发动机，但是过多雾化不完全的燃料会在金属表面沉积并可能在高温下形成积碳。而低十六烷值燃料压缩是利用高压缩比，大量废气再循环后获得额外的热能，并供应自由基以引发燃烧。虽然低十六烷值燃料压缩自燃温度高，但燃料表面的点火温度和点火能量都较低，易导致活塞、排气阀或汽缸盖上的积碳自动点火，产生早燃现象，并增加碳氢化合物和一氧化碳的排放量。
发明内容
为解决以上技术问题，本发明提供一种应用于发动机中的陶瓷热障涂层，通过在其顶部的陶瓷层中添加氧化催化剂，利用过量的碳氢化合物和一氧化碳，并使碳氢化合物在转化为积碳之前，将其氧化，将其放热反应产生的热量应用于其它后处理系统迅速升温，减少燃料加浓，降低碳氢化合物，氮氧化物和一氧化碳排放量。
本发明采用的技术方案为：
一种应用于发动机中的陶瓷热障涂层，包括与金属基体热膨胀系数相匹配的粘结层、陶瓷层以及由于粘结层氧化形成的热生长氧化层，陶瓷层中还添加有氧化催化剂，其孔隙率大于金属粘结层的孔隙率。
优选地，粘结层的主要成分为二氧化锆、氧化铝、二氧化钛、钇稳定氧化锆或锆酸钆。
优选地，与粘结层粘接的底层金属基体是掺杂有锆、铝、钛、镍、铬、铁、碳、硅其中的一种或几种形成的合金。
优选地，粘结层还掺杂有含莫来石（Al6Si2O13）。
优选地，陶瓷层的孔隙率为30~60%，其表面还装有微尺度管状催化陶瓷膜反应器。
优选地，还包括一密封层，位于陶瓷层上方，密封层的外表面设置有50nm~5um的可控制尺寸的环形坑组成的纹理；所述环形坑中还掺杂有氧化催化剂。
更优选地，所述氧化催化剂为可选择性地氧化燃烧室和废气流动通道中的碳氢化合物和一氧化碳的活性材料，所述活性材料为铂、铑或钯族金属。
本发明还公开了一种发动机，包括控制单元、活塞、进气门、排气门、气缸盖、进气口、排气口、排气歧管、涡轮增压器、高压或低压废气再循环系统，其中，在发动机中与燃烧气体接触的金属表面上设有上述的陶瓷热障涂层。
优选地，陶瓷热障涂层的热导率为0.3~0.6W/mK，发动机中涡轮叶片上的陶瓷热障涂层厚度为10~30um，其余部位的陶瓷热障涂层厚度为0.3~0.9mm。
优选地，发动机中开放表面上（如活塞，缸盖，气阀）的陶瓷热障涂层采用热喷涂法形成，封闭表面以及涡轮叶片上的陶瓷热障涂层采用等离子体电化学沉积法形成。
与现有技术相比，本发明具有以下技术优势：
（1）本发明通过在陶瓷热障涂层的陶瓷层内掺杂氧化催化剂，在发动机冷启动期间氧化过量的碳氢化合物和一氧化碳，其氧化放热反应产生的能量将进一步加速后处理预热；当发动机在高负荷下运行时，掺杂有氧化催化剂的陶瓷层亦会防止因积碳引起早燃现象的发生。
（2）本发明中陶瓷热障涂层的陶瓷层外表面还装有的微尺度管状催化陶瓷膜反应器，可减轻其内部的氧化催化剂掺杂而导致孔隙率损失，以确保陶瓷层足够的绝热而不损害外表面的催化化学作用。
（3）本发明在陶瓷热障涂层的陶瓷层上方还可以设置有50nm~5um的可控制尺寸的环形坑组成的纹理，亦可减轻其内部的氧化催化剂掺杂而导致孔隙率损失。
（4）本发明在陶瓷热障涂层的陶瓷层上方还设有密封层，可有效减少进气加热对充气效率的负面影响，以避免陶瓷层捕获高温燃烧废气。
（5）由本发明制得的陶瓷热障涂层粘合强度高于30Mpa，可确保发动机在运行期间具有足够的可靠性和耐久性；在粘结层掺杂的含莫来石，可确保其具有足够的拉伸剪切强度。
具体实施方式
现在结合实施例对发明进一步详细的说明。
本发明一种应用于发动机中的陶瓷热障涂层，包括与金属基体热膨胀系数相匹配的粘结层、陶瓷层以及由于粘结层氧化形成的热生长氧化层，陶瓷层中还添加有氧化催化剂，其孔隙率大于金属粘结层的孔隙率。
其中，粘结层的主要成分为二氧化锆、氧化铝、二氧化钛、钇稳定氧化锆或锆酸钆，基底材料可以是掺杂有锆、铝、钛、镍、铬、铁、碳、硅或者它们的合金，还可以是各种钢合金。为确保陶瓷热障涂层具有足够的拉伸剪切强度，可在粘结层掺杂Al6Si2O13。
陶瓷层中的氧化催化剂为可选择性地氧化燃烧室和废气流动通道中的碳氢化合物和一氧化碳的活性材料，优选为铂、铑或钯族金属。由于靠近燃烧气体和高度湍流，燃烧室、排气流动通道以及涡轮叶片表面上的催化剂在冷启动期间将比邻近的催化器和车底部催化剂更早被加热。
为确保使陶瓷层孔隙率维持在30~60％之间，可在陶瓷层表面设置微尺度管状催化陶瓷膜反应器，亦可以在陶瓷层上方设置一密封层，通过脉冲飞秒激光器在密封层的外表面上制造出尺寸为50nm~5um的各种可控制尺寸的环形坑组成的纹理，环形坑中还掺杂有氧化催化剂。
本发明还公开了一种发动机，包括控制单元、活塞、进气门、排气门、气缸盖、进气口、排气口、排气歧管、涡轮增压器、高压或低压废气再循环系统，在发动机中与燃烧气体接触的金属表面上设有上述的陶瓷热障涂层，主要设置的位置有：活塞顶部、燃烧室内外、进气门、排气门、汽缸盖表面、排气歧管、涡轮机壳体、废气旁通阀表面、可变几何形状涡轮喷嘴叶片、喷嘴环保持架以及涡轮叶片，其中，发动机中开放表面上（如：活塞、缸盖、气阀等）的陶瓷热障涂层采用热喷涂法形成，封闭表面上（如：排气歧管等）以及涡轮叶片上的陶瓷热障涂层采用等离子体电化学沉积法形成。
由本发明制的陶瓷热障涂层的整体热导率在0.3~0.6W / mK之间，除了涡轮叶片上的陶瓷热障涂层之外，热障涂层的总厚度为0.3~0.9mm，涡轮机叶片上的陶瓷热障涂层用作氧化催化剂的基底，因此其厚度将被限制为10~30um，这对于等离子体电化学沉积涂层是实用的，并且对于催化剂掺杂而言是足够的。
排气歧管、涡轮机壳体以及涡轮机叶片的内表面上的陶瓷热障涂层中的陶瓷层可以不用设置密封层。
Claims (4)
1.一种应用于发动机中的陶瓷热障涂层，包括与金属基体热膨胀系数相匹配的粘结层、陶瓷层以及由于粘结层氧化形成的热生长氧化层，其特征在于：陶瓷层中还添加有氧化催化剂，其孔隙率大于金属粘结层的孔隙率；
粘结层的主要成分为二氧化锆、氧化铝、二氧化钛、钇稳定氧化锆或锆酸钆；
与粘结层粘接的底层金属基体是掺杂有锆、铝、钛、镍、铬、铁、碳、硅其中的一种或几种形成的合金；
粘结层还掺杂有Al6Si2O13；
还包括一密封层，位于陶瓷层上方，密封层的外表面有50nm~5um的可控制尺寸的环形坑组成的纹理；所述环形坑组成的纹理中还掺杂有氧化催化剂；
所述氧化催化剂为可选择性地氧化燃烧室和废气流动通道中的碳氢化合物和一氧化碳的活性材料；所述活性材料为铂、铑或钯族金属；
陶瓷热障涂层的陶瓷层内掺杂氧化催化剂，在发动机冷启动期间氧化过量的碳氢化合物和一氧化碳，其氧化放热反应产生的能量将进一步加速后处理预热；当发动机在高负荷下运行时，掺杂有氧化催化剂的陶瓷层亦会防止因积碳引起早燃现象的发生。
2.一种发动机，包括控制单元、活塞、进气门、排气门、气缸盖、进气口、排气口、排气歧管、涡轮增压器、高压或低压废气再循环系统和涡轮叶片，其特征在于：在发动机中与燃烧气体接触的金属表面上设有权利要求1所述的陶瓷热障涂层。
3.根据权利要求2所述的一种发动机，其特征在于：陶瓷热障涂层的热导率为0.3~0.6W/mK，发动机中涡轮叶片上的陶瓷热障涂层厚度为10~30um，其余部位的陶瓷热障涂层厚度为0.3~0.9mm。
4.根据权利要求2所述的一种发动机，其特征在于：发动机中开放外表面上的陶瓷热障涂层采用热喷涂法形成，封闭表面以及涡轮叶片上的陶瓷热障涂层采用等离子体电化学沉积法形成。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291806.9A CN108442980B (zh) | 2018-04-03 | 2018-04-03 | 一种应用于发动机中的陶瓷热障涂层及其发动机 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291806.9A CN108442980B (zh) | 2018-04-03 | 2018-04-03 | 一种应用于发动机中的陶瓷热障涂层及其发动机 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108442980A CN108442980A (zh) | 2018-08-24 |
| CN108442980B true CN108442980B (zh) | 2024-04-05 |
Family
ID=63198144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810291806.9A Active CN108442980B (zh) | 2018-04-03 | 2018-04-03 | 一种应用于发动机中的陶瓷热障涂层及其发动机 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108442980B (zh) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663092B (zh) * | 2020-05-19 | 2022-05-10 | 上海亚域动力工程有限公司 | 一种金属基体表面陶瓷热障涂层及其在发动机中的应用 |
| CN113294261B (zh) * | 2021-06-29 | 2022-08-23 | 潍柴动力股份有限公司 | 缸盖、涂层制备装置及涂层制备方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615876A (zh) * | 2012-03-23 | 2012-08-01 | 上海大学 | Pt+Si改性的β-NiAl热障涂层及其制备方法 |
| CN103160773A (zh) * | 2013-02-22 | 2013-06-19 | 天津大学 | 通过控制热生长氧化层成分延长发动机热障涂层寿命的方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6422008B2 (en) * | 1996-04-19 | 2002-07-23 | Engelhard Corporation | System for reduction of harmful exhaust emissions from diesel engines |
| US9034479B2 (en) * | 2011-10-13 | 2015-05-19 | General Electric Company | Thermal barrier coating systems and processes therefor |
-
2018
- 2018-04-03 CN CN201810291806.9A patent/CN108442980B/zh active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615876A (zh) * | 2012-03-23 | 2012-08-01 | 上海大学 | Pt+Si改性的β-NiAl热障涂层及其制备方法 |
| CN103160773A (zh) * | 2013-02-22 | 2013-06-19 | 天津大学 | 通过控制热生长氧化层成分延长发动机热障涂层寿命的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108442980A (zh) | 2018-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Abedin et al. | Combustion, performance, and emission characteristics of low heat rejection engine operating on various biodiesels and vegetable oils | |
| US6826903B2 (en) | Exhaust gas recirculation system having cooler | |
| US7195006B2 (en) | Exhaust gas recirculation system with control of EGR gas temperature | |
| Domakonda et al. | Application of thermal barrier coatings in diesel engines: a review | |
| US6256984B1 (en) | System for reduction of harmful exhaust emissions from diesel engines | |
| CN108442980B (zh) | 一种应用于发动机中的陶瓷热障涂层及其发动机 | |
| TWI655361B (zh) | 用於內燃機之排氣控制裝置及用於排氣控制裝置之控制方法 | |
| US20090077954A1 (en) | Continuously regenerating particulate filter for internal combustion engine | |
| US4819595A (en) | Method of operating catalytic ignition cyclic engines | |
| US4773368A (en) | Method of operating catalytic ignition cyclic engines and apparatus thereof | |
| EP2484877A2 (en) | Exhaust system having thermally conductive dosing channel | |
| Parker | Thermal barrier coatings for gas turbines, automotive engines and diesel equipment | |
| CN111663092B (zh) | 一种金属基体表面陶瓷热障涂层及其在发动机中的应用 | |
| SE1651286A1 (en) | Multiple bank exhaust system for a turbocharged internal combustion engine comprising reductant supply system | |
| US20090282816A1 (en) | Fresh Air Bypass to Cool Down Hot Exhaust in DPF Regeneration Mode at Low Vehicle Speed and Idle | |
| CN114017178B (zh) | 一种稀薄燃烧控制方法、控制装置及氢气发动机系统 | |
| CN115750043A (zh) | 用于氨燃料压燃内燃机的车载氨裂解制氢系统及控制方法 | |
| Hasimoglu | Exhaust emission characteristics of a low-heat-rejection diesel engine fuelled with 10 per cent ethanol and 90 per cent diesel fuel mixture | |
| US9212590B2 (en) | Internal combustion engine having an exhaust gas system | |
| Veda Spandana et al. | Experimental study on yttria stabilized and titanium oxide thermal barrier coated piston effect on engine performance and emission characteristics | |
| Singh et al. | Performance and Emission Characterizations of Diesel Engine with Ceramic Material Coating on Combustion Chamber Act as Thermal Barrier: a Review Study | |
| Buyukkaya et al. | Application of thermal barrier coating in a diesel engine | |
| Reghu et al. | Comparative Experimental Studies on Four Stroke Four Cylinder Diesel fuelled Base Line Engine and Low Heat Rejection Engine | |
| US20240110498A1 (en) | Turbocharger | |
| Raman et al. | Effect of thermal barrier coating on performance and emission characteristics of a diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gu Jinpei Inventor after: Sun Huimin Inventor before: Gu Jinpei |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |