Crystallization and wear behavior of SiO2-Al2O3-ZrO2-Ba(Sr, Ca)O glass-ceramics added with Cr2O3 by different methods

Feng, Min; Chen, Ming‐Hui; Yu, Zhongdi; Chen, Zhixiong; Chen, Jinhui; Zhu, Shenglong; Wang, Fuhui

doi:10.1016/j.ceramint.2019.07.294

Cited by 15 publications

(5 citation statements)

References 42 publications

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“…Therefore, the diffusion of Cr atoms through the coating becomes the primary process of high temperature oxidation. As mentioned in the literature [36], Cr ions dissolved within the coating react with barium to form Ba 2 CrO 4 crystal precipitation. The XRD patterns (Figure 4b) and the enrichment of Ba and Cr in the coating/substrate interface (Figure 6d) can prove this.…”

Section: Gcc Improves Oxidation Resistance Of Mss At High Temperaturementioning

confidence: 88%

Improved Oxidation and Hot Corrosion Resistance of 1Cr11Ni2W2MoV Stainless Steel at 650 °C by a Novel Glass-Ceramic Coating

Chen

Lin

et al. 2021

Crystals

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A novel glass-ceramic coating was applied onto the 1Cr11Ni2W2MoV stainless steel. The oxidation and corrosion behaviors of coated and uncoated steels were comparatively investigated in air and in the presence of NaCl + Na2SO4 eutectic deposits at 650 °C, respectively. Protective scales formed on the surface of stainless steel prevented the severe oxidation of the alloy. Catastrophic hot corrosion occurred on the steel when a salt film was attached, producing loose iron oxide layers and internal corrosion zone. The glass-ceramic coating acted as a barrier that effectively hindered the invasion of corrosive species during the oxidation and hot corrosion tests.

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Section: Gcc Improves Oxidation Resistance Of Mss At High Temperaturementioning

confidence: 88%

Improved Oxidation and Hot Corrosion Resistance of 1Cr11Ni2W2MoV Stainless Steel at 650 °C by a Novel Glass-Ceramic Coating

Chen

Lin

et al. 2021

Crystals

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“…This led to an increased surface area, accelerating the corrosion reaction when exposed to CMAS melt [92]. Feng et al described a glass-ceramic coating comprising SiO 2 -Al 2 O 3 -ZrO 2 -Ba(Sr, Ca)O doped with Cr 2 O 3 [93]. This addition of the Cr 2 O 3 was found to improve the wear resistance and lower the coefficient of friction.…”

Section: Glass-ceramicsmentioning

confidence: 99%

“…This addition of the Cr 2 O 3 was found to improve the wear resistance and lower the coefficient of friction. Without the addition of Cr 2 O 3 , when annealed at >1000 • C, BaSi 2 O 5 crystallites were formed, but with Cr 2 O 3 included in the fabrication process, the major crystal products were BaCrO 4 and BaCr 2 O 4 , which promoted the formation of a lubricating layer and reduced the rate of wear damage [93].…”

Section: Glass-ceramicsmentioning

confidence: 99%

A Selective Review of Ceramic, Glass and Glass–Ceramic Protective Coatings: General Properties and Specific Characteristics for Solar Cell Applications

Rebekah,Catherine¹,

Gîrtan

2023

Materials

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A review on ceramics, glasses and glass–ceramics as thin film protective coatings for solar cells is given. The different preparation techniques and the physical and chemical properties are presented in a comparative way. This study is useful for technologies involving solar cells and solar panel cell development at the industrial scale, because protective coatings and encapsulation play a major role in increasing the lifetime of solar panels and environmental protection. The aim of this review article is to give a summary of existing ceramic, glass, and glass–ceramic protective coatings and how they apply to solar cell technology: silicon, organic or perovskite cells. Moreover, some of these ceramic, glass or glass–ceramic layers were found to have dual functionality, such as providing anti-reflectivity or scratch resistance to give a two-fold improvement to the lifetime and efficiency of the solar cell.

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“…The formation of Cr 6+ could be explained by the reaction of Cr 2 O 3 as an acid oxide and CaO as an alkaline oxide with the aid of O 2 via eq 3. 38 It should be noted that the formation of Cr 6+ was undesirable due to the higher toxicity and mobility of Cr 6+ than Cr 3+ . 39,40 This reaction mainly occurred on the surface of glassceramics, while it was unfavorable in the bulk phase due to the deficiency of oxygen.…”

Section: Crystalline Phase Evolution Of Glass-ceramicsmentioning

confidence: 99%

Mechanism and Prediction of Cr and Zn Immobilization from Industrial Residues by Glass-Ceramics

et al. 2021

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Controllable preparation of a waste-derived glass-ceramics provides a promising and environmentally safe strategy for industrial residue recycling by immobilizing hazardous heavy metals in its amorphous-crystal multiphase structure. A modified two-step method was developed for treatment of Zn- and Cr-containing wastes to enhance the economic feasibility and reduce the risk of heavy metal evaporation. ZnO and Cr2O3 with various Zn or Cr contents (1, 5, and 10 wt %) were added after vitrifying the CaO(25 wt %)-Al2O3(20 wt %)-SiO2(55 wt %) system, followed by crystallization at 1000 and 1100 °C, respectively. Various qualitative and quantitative characterizations including TG-DSC, XRD, Rietveld refinement analysis of XRD patterns, XPS, and HRTEM were performed to demonstrate the immobilization mechanism of Zn and Cr species. Meanwhile, an artificial neural network (ANN) model was trained and optimized for simulation and prediction of heavy metal immobilization in glass-ceramics. The results demonstrated that the predicted results obtained from the well-trained ANN model fitted well with the experimental results. Both Zn and Cr were immobilized in glass-ceramics efficiently with immobilization efficiencies of 86.5–97.6% for Zn and 99.3–99.9% for Cr. Zn preferred to be immobilized in glass-ceramics by chemical stabilization. Around 50 wt % of Zn was incorporated in Ca2ZnSi2O7 crystals, while the rest was present in the glass matrix as dissolved Zn2+ ions. However, the most dominant immobilization mechanism of Cr was physical encapsulation, with 82 wt % of Cr embedded in the glass matrix of glass-ceramics as Cr2O3 crystals. The sensitive analysis suggests that the heavy metal content played the most important role, while crystallization temperature contributed the least for heavy metal immobilization. Among various inherent natures of heavy metals, the atomic radius was the most critical in determining immobilization efficiency of heavy metals. The results provide a comprehensive guidance for the preparation of heavy-metal-incorporated glass-ceramics and further enhancement of heavy metal immobilization effects.

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Crystallization and wear behavior of SiO2-Al2O3-ZrO2-Ba(Sr, Ca)O glass-ceramics added with Cr2O3 by different methods

Cited by 15 publications

References 42 publications

Improved Oxidation and Hot Corrosion Resistance of 1Cr11Ni2W2MoV Stainless Steel at 650 °C by a Novel Glass-Ceramic Coating

Improved Oxidation and Hot Corrosion Resistance of 1Cr11Ni2W2MoV Stainless Steel at 650 °C by a Novel Glass-Ceramic Coating

A Selective Review of Ceramic, Glass and Glass–Ceramic Protective Coatings: General Properties and Specific Characteristics for Solar Cell Applications

Mechanism and Prediction of Cr and Zn Immobilization from Industrial Residues by Glass-Ceramics

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