Culinary item comprising a rare earth oxide layer
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Solution Overview
Problem
Current culinary coatings lack a combination of excellent non-stick properties and mechanical hardness, with fluorocarbon resin-based coatings falling short in abrasion resistance and enamel or sol-gel coatings lacking non-stick performance.
Innovation Solution
A rare earth oxide layer, comprising cerium oxide with optional fillers like fluorocarbon resins, is applied to culinary items, providing both mechanical hardness and hydrophobicity for enhanced non-stick properties, achieved through methods such as spray pyrolysis, thermal spraying, or sol-gel processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fluorocarbon resin-based coatings are used, then non-stick properties are improved, but resistance to abrasion and scratching deteriorates
Solution Approach 1:
The patent applies composite materials by combining fluorocarbon resin with inorganic fillers (such as aluminum oxide, silicon oxide, titanium oxide) to create a coating that exhibits both the non-stick properties of the fluorocarbon resin and the mechanical strength and abrasion resistance of the inorganic fillers. This composite structure resolves the contradiction by integrating materials with complementary properties.
2Strength
If enamel or sol-gel coatings are used, then material hardness and resistance to high temperatures are improved, but non-stick properties deteriorate
Solution Approach 1:
The patent combines enamel or sol-gel coatings with fluorocarbon resin to create a composite coating structure. The enamel or sol-gel provides the hard, heat-resistant base layer, while the fluorocarbon resin component imparts non-stick properties. This composite approach allows the coating to simultaneously achieve high temperature resistance, hardness, and non-stick performance.
3Strength
If fillers are added to fluorocarbon resin-based coatings, then resistance to abrasion and scratching is improved, but non-stick performance deteriorates
Solution Approach 1:
The patent optimizes the parameters of the coating formulation by carefully controlling the type, amount, size, and distribution of inorganic fillers within the fluorocarbon resin matrix. By adjusting these parameters, the coating achieves an optimal balance where fillers provide mechanical strength without excessive aggregation that would compromise the smooth surface and non-stick properties. The patent specifies particular filler characteristics and concentrations to maintain non-stick performance while enhancing abrasion resistance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The rare earth oxide layer offers a superhydrophobic surface with improved resistance to abrasion and corrosion, maintaining non-stick attributes comparable to fluorocarbon resin-based coatings while matching the mechanical performance of enamel or sol-gel coatings.
Implementation Method 1
rare earth oxides having the particularity of having not only mechanical hardness and resistance to abrasion similar to enamels and ceramics, but also excellent intrinsic hydrophobicity, giving the obtained coating non-stick attributes
Implementation Method 2
The incorporation of cerium oxide in the rare earth oxide matrix provides a barrier effect (anti-corrosion, anti-oxidation, impermeability to liquids and gas). This barrier effect is due to the hydrophobic properties of cerium oxide (commonly known as ceria) which, among other things, makes it insoluble in water.
Data Source
AI summary
Provided is a culinary item, one surface of which is provided with a coating including at least one rare-earth oxide layer. Such a coating has the specific feature of not only having mechanical hardness and abrasion resistance comparable to those of enamels and ceramics, but also excellent intrinsic hydrophobic properties that enable the coating obtained to have a non-stick property that is comparable to that of fluorocarbon coatings and suitable for culinary applications.